Pretty Little Liars ( book series ) - wikipedia Pretty Little Liars ( book series ) Pretty Little Arc 1 : Pretty Little Liars Flawless Perfect Unbelievable Arc 2 : Wicked Killer Heartless Wanted Arc 3 : Twisted Ruthless Stunning Burned Arc 4 : Crushed Deadly Toxic Vicious Companion novels : Alison 's Pretty Little Diary Pretty Little Secrets Ali 's Pretty Little Lies Pretty Little Love Pretty Little Lost Author Sara Shepard Country United States Language English Genre Young adult Mystery Romance Coming of age Publisher HarperTeen Published October 2006 -- December 2014 Media type Print ( hardback & paperback ) Audiobook E-book No. of books 18 ( and 3 short stories ) Pretty Little Liars is a series of young adult novels by Sara Shepard. Beginning with 2006 's initial novel of the same name, the series follows the lives of four girls -- Spencer Hastings, Hanna Marin, Aria Montgomery and Emily Fields. The novels have appeared on The New York Times Best Seller list. A television series adaptation loosely based on the novels debuted on June 8, 2010, on ABC Family. The franchise has been licensed by Amazon.com 's Kindle Worlds range of non-canon ebooks. Contents 1 Overview 2 Characters 3 Novels 3.1 First Arc 3.2 Second Arc 3.3 Third Arc 3.4 Fourth Arc 3.5 Companion novels 4 References 5 External links Overview The series is loosely divided into four arcs, chronicling the introduction and reveal of each `` A ''. Set in the suburbs of Philadelphia, the series follows the lives of four teenage girls nicknamed the Pretty little Liars or simply the Liars, whose clique falls apart after the disappearance of their Queen bee leader, `` Alison DiLaurentis ''. Three years after her disappearance, the girls begin receiving threatening messages from an anonymous character named `` A, '' who threatens to expose their secrets, including long - hidden ones they thought only Alison knew. Shortly after the messages begin, Alison 's body is discovered buried in her yard. The books progress with the four girls trying to figure out the identity of `` A '' and facing many dangerous obstacles and twists as they do so. Characters The series has many characters, most of them recurring. The main characters are : Spencer Hastings : Spencer is a headstrong, intelligent, overachieving girl who comes from the wealthy Hastings family. Hanna Marin : Hanna is the bubbly, strong, and fierce `` it - girl '' of the group following Alison 's disappearance. She suffers from an eating disorder, about which she received taunts from Alison. Aria Montgomery : Aria is a quirky and artsy girl who, at the beginning of the books, is trying to find herself. Emily Fields : Emily is considered the jock of the group, being a physical, loyal girl who struggles with her sexuality. Alison DiLaurentis : Alison is the former `` Queen Bee '' of her clique, consisting of Spencer, Hanna, Aria and Emily. She had supposedly been killed at the beginning of the series however is revealed to have been alive and also their tormentor `` A '' as she was mistaken for her twin sister Courtney who pretended to be like her and was sent to The Preserve at Addison - Stevens, which she believed was the Liars ' fault and has been plotting revenge ever since. Her identical twin sister Courtney DiLaurentis is not crazy but she debuted inWanted after the TV show began in 2010. In the prequel, Courtney - as - Ali started disappearing in the last chapter and getting almost killed numerous times, until the end of the series ( Vicious ) when Ali - as - Courtney came out and started becoming friends with her twin `` Ali '' again after rehab with Iris and Tabitha, two lookalikes of Ali, all in the penultimate chapter. In the book, their older brother 's name is Jason DiLaurentis and their half - sisters are Melissa and Spencer Hastings. Courtney DiLaurentis : Alison is really Courtney in the books. She used to be sweet, until she started pretending to be her twin, where her personality morphed into her. She is the third child to Jessica and Kenneth and was sent to The Preserve at Addison - Stevens after a physical argument with Alison who she eventually turned into and befriended the Liars up until the night of her infamous disappearance when she was killed and buried by the real Alison DiLaurentis and her accomplice Nick Maxwell. A : A is the main antagonist of the series, being, for the most part, an anonymous character who relentlessly torments many characters, in particular the Liars. Mona Vanderwaal, Alison DiLaurentis and Nick Maxwell are discovered to be A. Mona became A due to Alison and the Liars being responsible for The Jenna Thing, which burned her too. However, she is killed when Spencer pushes her off a cliff face and her neck is caught between rocks. However, a new `` A '' rises, this time even more determined to hurt the Liars. This A is revealed to be Alison herself who wanted revenge on the Liars for ruining her life and Nick, who is revealed to be her accomplice. Novels First arc Book # Title Publication Date ISBN Pages Pretty Little Liars October 3, 2006 978 - 0 - 06 - 088730 - 8 304 The story introduces an exclusive group of friends : Alison DiLaurentis, the popular yet manipulative queen bee ; Aria Montgomery, an independent girl who is considered to be the oddball in Rosewood who also went to Iceland for the summer ; Emily Fields, a swimmer who holds secret feelings for Alison ; Hanna Marin, who strives to be thin and popular like Alison ; and Spencer Hastings, an overachiever who is brave enough to stand up against Alison 's manipulative ways. Alison mysteriously disappears during a sleepover with the girls in the summer before 8th grade. The story then jumps 3 years later, when the girls are living their own lives and do n't speak to each other. Aria returns to Rosewood from a 3 - year trip to Iceland with her family and comes back much more sophisticated than before she left. She meets and makes out with a guy in a local bar who is revealed later to be her English teacher, Ezra Fitz. Emily befriends the new girl in town, Maya St. Germain, and soon develops romantic feelings for her, even though Emily has a boyfriend, Ben. Ben later finds Maya and Emily kissing in the photo booth at a party and dumps beer on them. Hanna is the new popular girl in town alongside the former nerd, Mona Vanderwaal. However, she and Mona sometimes shoplift though both can clearly afford their steals. Hanna battles the urge to turn back to bulimia, and struggles to manage the stress of keeping her queen bee status. Spencer continues to struggle in her long - standing rivalry with Melissa Hastings, her perfect older sister. Problems occur when she begins to feel attracted to Melissa 's new boyfriend, Wren Kim. Throughout the story, the liars get messages threatening to reveal their secrets of the present and past, including a terrifying incident the girls refer to as `` The Jenna Thing ''. They automatically believe it is their missing friend, Alison, because she is the only one each of them confided in regarding their darkest secrets. However, they are shocked when the police find her corpse buried in the gazebo of her former house. The book ends with the liars receiving a text at Alison 's funeral saying, `` I 'm still here, bitches. And I know everything. - A ``. The girls have made up at this point. Flawless March 27, 2007 978 - 0 - 06 - 088733 - 9 330 Spencer Hastings, Hanna Marin, Aria Montgomery, and Emily Fields continue to receive text messages from an unknown person, `` A '', and are more desperate than ever to discover the identity of `` A '', who is still taunting them with the threat of exposing their many secrets. At first the girls think `` A '' is Alison, because she is the only person who knew their secrets, but then they start to believe the person behind the threats is Toby, because some messages they receive refer to ' The Jenna Thing ' and with Alison dead, he is the only other person who was a part of the incident, although everyone but Spencer is unaware of why he took the blame for what happened to Jenna. `` The Jenna Thing '' is revealed to be an incident in which Ali had set off a stink bomb in Jenna Cavanaugh 's step - brother Toby 's treehouse to get revenge after supposedly spying on her, only to see the treehouse burst into flames, not knowing that Jenna was inside, and due to that, she was permanently blinded. Toby was framed for the garage fire by Alison. `` A '' sends Emily a text message hinting that `` A '' knows about Emily and Maya 's romantic relationship and threatens to tell everyone about it. Emily becomes close with Toby and goes to a big benefit party with him but then later tells him that she thinks she might be gay. `` A '' leaves a note for Hanna that forces her to tell Naomi and Riley that she makes herself throw up and that Sean was the one who broke up with her. Later on, she receives a text that tells her Sean is at Foxy with another girl. Hanna is shocked to discover her former boyfriend Sean Ackard ignoring his Virginity Club vows and nearly having sex with Aria. `` A '' continuously tells Aria to either ' get rid of the problem ' or to tell her mom the truth about Byron, her father, that he is seeing another woman. Aria goes to confront the other woman, Meredith, but when she does Meredith tells her that she and Aria 's father are in love. Ella finds out that Byron is having an affair with a student named Meredith Gates and kicks him out, leaving Ella and Aria 's mother - daughter relationship shattered. Spencer continues to date with her sister Melissa 's now ex-boyfriend Wren and later loses her virginity to him. However, Melissa starts to hook - up with him as well and eventually makes sure that he will be out of both of their lives for good. Emily blames herself for Toby 's suicide. In this book it is revealed that Toby was forcing himself on Jenna when they were in middle school and Ali and Spencer were the only ones who knew about it, which is how Alison forced Toby to take the blame. Perfect August 21, 2007 978 - 0 - 06 - 088736 - 0 298 Now homeless, Aria goes to live with her new boyfriend, Sean Ackard. Still seeing Ezra, their relationship is broken up when Sean informs the police, having found out the secret from `` A ''. Emily plans to go to the police to stop `` A '', which leads to `` A '' taking revenge by outing her to the whole school. Emily 's parents threaten to send her away if she does not attend a `` de-gaying '' program, however, Emily realizes she ca n't change who she is. Spencer is nominated for a Golden Orchid Award for the essay she copied from her sister Melissa, which `` A '' threatens to expose. Spencer 's family discovers she cheated on her Golden Orchid essay, but keep it quiet to protect their reputation. Spencer comes to believe she might have killed Alison after discovering she suffers from rage - induced blackouts. Hanna and Mona get into a fight, and Hanna seeks comfort with an `` uncool '' boy named Lucas. She goes to Mona 's birthday party but gets humiliated, but she receives a text from `` A '' and recognizes the number. She intends to reveal the true identity of `` A '' to the other girls, but is run down by `` A '' before she can do so. The girls recognize it is A from the eerie text : She Knew Too Much - A Unbelievable May 27, 2008 978 - 0 - 06 - 088739 - 1 335 Hanna barely survives being rundown by `` A '', and due to a head injury, she loses her memory of the previous day, thus forgetting `` A '' 's identity. Emily 's parents catch her with Maya at a party and send her to Iowa to live with her strict, religious relatives. She is glad to be safe from `` A '', but after Emily is accused of threatening her cousins, she runs away. Emily returns home when she sees her parents on TV, who tell her that they love her and accept her for who she is. Emily and Maya are reunited, but Trista, a girl who Emily had met and flirted with in Iowa comes to visit, their relationship is shattered, and Emily is saddened further when she sees Trista and Noel hooking up. After being kicked out of Sean 's house, Aria reluctantly moves in with Byron and Meredith, who announces that she is pregnant and when Bryon 's and Ella 's divorce is finalized, they are to be married. While at Hollis College, Aria takes an art class and befriends Jenna, who she suspects could be `` A ''. `` A '' reveals to Melissa ( Spencer 's sister ) that Spencer stole her essay for the Golden Orchid competition, but the family keeps quiet to protect their reputation. Melissa and Spencer grow closer, and Spencer confesses that she kissed Ian, and that he and Alison were secretly dating. When fragments of her memory from the night Alison died are restored, Spencer is horrified when it dawns on her that she may have accidentally killed Alison. Mona and Hanna 's friendship is restored, and to celebrate Hanna 's recovery, Mona and Spencer plan a party for her. Spencer is surprised to discover that she enjoys Mona 's company, and even more so when Mona tells her that she has been receiving messages from `` A ''. Hanna is thrilled that Spencer approves of Mona, and they consider letting her join their clique. `` A '' tells Aria that Meredith has a secret job at Hooters, and she goes there with Mike, only to discover that `` A '' was lying. Darren Wilden and several other cops are there, and Aria is tempted to tell them about `` A ''. When Mike realizes that something is troubling his sister, he urges her to tell Darren, and she eventually does. On the night of Hanna 's party, Aria tells Jenna what happened the night she was blinded and apologizes for not stopping Alison, but Jenna reveals that she and Alison had planned it together to get rid of Toby. Aria asks Jenna about `` A '', but Jenna becomes scared and quickly leaves, hinting that she knows who `` A '' is. Melissa confronts Spencer about seeing Ian behind her back, which Spencer denies, and when she leaves, Spencer and Mona discover another note from `` A '' and suspect that Melissa killed Alison because she was jealous of her relationship with Ian. They inform the others, and decide to turn Melissa in. Mona drives Spencer to the police station, and Aria tells Emily and Hanna the truth about The Jenna Thing. When Hanna says that one in four boys sexually abuse their sister, Emily tells her not to believe everything she hears, which causes Hanna 's memory to return, and she is horrified when she remembers who `` A '' is : Mona. Spencer is hesitant about turning in Melissa, but Mona comforts her and convinces her otherwise. Moments later, Spencer receives a text from Emily, telling her that Mona is `` A ''. When she receives several more from the girls, who are worrying about what Mona will do, Mona realizes that they finally figured it out. While Aria, Emily and Hanna go to the police station to tell Darren that Mona is `` A '', Mona drives Spencer to Floating Man 's Quarry, where she explains that she saw what happened on the night of The Jenna Thing, and when Maya moved in, she found Alison 's diary, which contained the girls ' secrets. Using the information to her advantage, she got a new phone and became `` A '' to get revenge on the girls for blinding Jenna. Spencer accuses Mona of killing Alison, but Mona says that it was Ian who killed her, as Alison had blackmailed him about their relationship. Spencer secretly calls Darren, who overhears her conversation with Mona and learns of their location. Mona tells Spencer that she originally planned to frame her for Alison 's murder, but recently grew to like her, and thus decided to frame Melissa to do Spencer a favor. She then offers Spencer her life in return that she becomes `` A '' with her, as they could pin the blame on someone else. Spencer refuses and Mona attacks her. They fight on the cliff 's edge, and in the struggle, Spencer accidentally pushes Mona off the cliff to her death. Aria, Emily and Hanna arrive on the scene with Darren and police, and find Mona 's body and an unconscious Spencer. Second arc Book # Title Publication Date ISBN Pages 5 Wicked November 25, 2008 978 - 0 - 06 - 156607 - 3 310 A new `` A '' begins making threats. Ian denies being Ali 's killer. Emily finds herself confused about her sexuality once again, as she now has feelings for a boy she met at church, Christian singer Isaac. Emily tries to date Isaac without him finding out about her orientation, though `` A '' keeps interfering. Emily tells Isaac about Maya and he then hugs her and tell her that he accepts her for who she is. Hanna, still overcome with shock after discovering Mona Vanderwaal was really `` A '', ca n't seem to catch a break. She now has trouble with her stepsister Kate Randall. At a party at a hotel opening, Hanna and Kate continue to fight over title of `` Queen Bee ''. Hanna and Lucas break up after Hanna tells everyone that Kate has herpes at a party to sabotage her. Eventually, Hanna 's father forbids her from talking to anyone except Kate. Aria has feelings for a man, Xavier, who she met at an art show ; however, he ends up meeting and dating her mother through an online match site. This puts her at risk of hurting her mother again and further damaging their newly repaired relationship. Aria moves in with Meredith and Byron to avoid Xavier as his true intentions will jeopardize Aria and Ella 's relationship. After a shock at her gran 's will reading and her family neglecting her, Spencer comes to believe that she is adopted and starts searching a reuniting website for answers. In the end, Spencer, Emily, Aria, and Hanna find Ian 's body in the woods behind Spencer 's house, but when they return with the police, the body is missing. Wilden sort of pushes it off, and begins the search hours after the girls had shared their story. 6 Killer June 30, 2009 978 - 0 - 06 - 156611 - 0 321 The girls discover that the person they think is Ali 's murderer -- Ian Thomas -- has actually been framed, and they start to wonder if the new `` A '' really wants to threaten them or just to solve the mystery. Spencer meets a woman named Olivia Caldwell who she thinks is her real mother, and attempts to move to New York, but it turns out to be a scam and she loses her college money. Hanna and Kate compete for the affections of Aria 's brother Mike Montgomery. Aria falls in love with Jason DiLaurentis again. Emily has sex with her new boyfriend Isaac, whose mother finds out and banishes Emily from their house without Isaac knowing. At the opening party for Radley, a former so - called `` haven for troubled youth '', Emily finds proof that Jason DiLaurentis had been a patient there, and soon Hanna, Aria, and Emily all come to believe that Jason and Darren Wilden had something to do with Ali 's murder. Ian Thomas confirms their suspicions about Darren and Jason right before someone sets the woods behind Spencer 's house to fire. Although at first they had their doubts about Ian being alive, they are now confident he is. While Aria is trying to get to Spencer 's barn to show them Ali 's flag from 6th grade, she finds someone caught in the woods because of the fire, saves this person, and then they all recognize her as Ali. 7 Heartless January 19, 2010 978 - 0 - 06 - 156614 - 1 274 After the fire, no one believes the girls when they insist that they saw Alison. `` A '' sends Emily to Lancaster, where Emily comes to believe that Ali was not the girl in the hole, but that Wilden has murdered a girl named Leah and covered it up by making it seem like it was Ali. Aria begins a relationship with Noel Kahn, after he defends her at a party. She visits a medium, who produces a message in Ali 's handwriting that states that `` Ali killed Ali. '' This leads her to believe that Ali might have committed suicide. Hanna 's father sends her to a clinic to prevent her eating disorder from reappearing due to stress, where she befriends a troubled girl named Iris. Hanna has more dreams about Ali, which causes her to suspect that Iris had something to do with Ali 's death. `` A '' reveals to Spencer that her father had an affair ( and that Alison is Spencer 's half - sister ), making her suspicious of her mother. The Liars are arrested for Ali 's murder. They realize that `` A '' has tricked each of them into believing someone else killed Ali. However, a man named Billy Ford is soon arrested for murdering Alison and Jenna Cavanaugh. Everyone now believes Ian is dead. 8 Wanted June 8, 2010 978 - 0 - 06 - 156617 - 2 259 Aria, Hanna, Emily and Spencer are shocked to learn of the existence of Alison 's twin sister, Courtney, when she 's introduced at a press conference. Courtney had spent her life in institutions due to `` health issues '' and her existence was kept secret by her family. It is revealed that Jason was not a patient at the Radley but instead he was visiting Courtney. She was finally released and went home to Rosewood, where she attempts to resume her sister 's life and begins tentative friendships with Ali 's old friends. She later reveals that she 's actually Ali, the real Courtney had pretended to be her on the night of Ali 's disappearance, and she was the one who was killed. When she had tried to tell her family who she was, they did n't believe her because Courtney was notorious for pretending to be Ali, and sent her back to the institution in Courtney 's place. The girls are thrilled that Ali is back, and jump at the chance to go with her to the family 's house in the Poconos after a school dance. On the way there, Spencer gets a frantic call from her mother telling her that Melissa has disappeared. Spencer had begun to believe that her sister was the one who killed Ali and that she may be after the rest of them, but once they arrive at the house it 's revealed that Ali is the killer. They discover that the girl they were friends with years ago was actually Courtney, and the real Ali was stuck in an institution. She had killed Courtney for ruining her life, attempted to kill the girls in the forest fire, tried to have them arrested, and is now going to kill them by setting the house on fire. They 're able to escape after stumbling onto Ian 's body hidden in a closet and releasing a bound Melissa, who Ali had kidnapped and was planning to kill as well. Ali is trapped inside the house and it 's assumed she died in the fire, although her body is never found. After learning that her ex-husband shipped Hanna off to a mental institution, Ashley Marin transfers back to Rosewood and kicks Hanna 's father, Isabel and Kate out of the house, thrilling Hanna. Hanna and Mike get back together. Meredith goes into labor, giving birth to a girl named Lola. Aria and Noel get back together after it is revealed that Ali kissed him, not the other way around, and Ella breaks up with Xavier after learning of his inappropriate behavior towards Aria. Spencer 's father proclaims that even though he and her mother may not get back together, things are going to change for the better in their family, and Spencer and Melissa grow closer after almost being killed. Emily buries everything she can find that reminds her of Ali at Courtney 's grave, hoping she can finally find closure, but is unsure of whether the noises she hears at the cemetery are real or imagined. And somewhere, a new girl starts her senior year at an anonymous school, a girl whose name just so happens to be an anagram of Alison DiLaurentis. The reader is left wondering if Alison is alive. Third arc Book # Title Publication Date ISBN Pages 9 Twisted July 5, 2011 978 - 0 - 06 - 208101 - 8 305 The book begins with the girls vacationing in Jamaica and Emily seeing a girl who she believes is Ali. Throughout the rest of the book, details about that fateful vacation emerge. In the meantime, Noel, Aria 's boyfriend, has an exchange student, from Finland, come to live with him. Instead of being the nerdy boy, Klaudius, that Noel expected, the exchange student turns out to be a gorgeous blonde, Klaudia, who tries to steal Noel from Aria. Aria ends up accidentally pushing Klaudia off of a ski lift as an act of self - defense ; however, Klaudia uses that information against Aria. By that point, Aria and Noel 's relationship is shaky and uncertain. Emily meets a new girl, Chloe, who moves into the Cavanaugh 's old house. They immediately become good friends, bonding over Chloe 's baby sister, Grace. Emily has now given up hope of getting a swim scholarship, her only option for college. Chloe 's dad offers to help but also hits on Emily, even making sexual moves towards her. Chloe walks in on her dad kissing Emily, but thinks that it 's Emily who is wrecking her family ( her father had previously been cheating ). Hanna 's dad runs for senator of Pennsylvania. Patrick, somebody who 's helping out at the set, offers Hanna a modeling job, but he takes some naughty pictures and threatens her with them, saying he will release them to the public and ruin her dads ' chances of becoming senator, unless she gives him $10,000. Hanna steals money from her dad and frames Jeremiah, a mean man who is also working on set. Spencer 's mom has begun to date Nicholas Pennythistle, the father of snobby Amelia and her brother Zach, in whom Spencer develops a romantic interest. When they go out dancing, she kisses him, only to find out Zach is gay. When the Hastings and Pennythistles travel to New York together, Spencer and Zach drunkenly fall asleep in the same bed. During the night, Spencer had kicked off her clothes because she was hot, leaving her in her blouse and underwear. The next morning Mr. Pennythistle wakes them both up by entering the room. Their indecent clothing and close proximity leads Mr. Pennythistle to believe that they had slept together and acts violent. Spencer tells him that Zach did n't touch her and that he 's gay, hoping to help, but Mr. Pennythistle becomes furious and sends Zach to military school. Zach and Spencer 's friendship ends, Zach leaving Spencer with the words `` Rot in hell, bitch ''. The girls start to get messages from a new `` A '', and believe it 's Ali and that she somehow survived the fall from the building. In the end of the book, the news turns on and a teenage girl 's dead body was found floating in the water in Jamaica. They identify this girl as Tabitha Clark from New Jersey. The cops believe her death was a tragic accident - not a murder. The girls realize they killed an innocent girl. 10 Ruthless December 6, 2011 978 - 0 - 06 - 208186 - 5 338 It is revealed that last summer while Spencer was taking AP courses at Penn, she began taking speed pills as a way to help with studying. After being arrested by the police for possession, she arranges for Hanna to help her frame her roommate, Kelsey, as a dealer, in order for Spencer to not face charges. After landing the role of Lady Macbeth in the school play, the stress and guilt begin to take their toll on Spencer, causing her to have frequent hallucinations in which she is haunted by Kelsey and Tabitha. She becomes paranoid and begins to believe Kelsey is `` A '' and is taking revenge on her for being framed. Emily accidentally meets Kelsey at a party and is instantly smitten with her. She and Kelsey grow close, much to Spencer 's disapproval. After Emily is hurt by Spencer 's remarks about her love for Alison, she angrily tells Kelsey that Spencer framed her for the drug possession. Depressed, Kelsey overdoses and attempts to throw herself into the quarry where Mona died, but Emily saves her and Kelsey is sent to the Preserve for treatment. While visiting Kelsey, the girls realize that Tabitha was also a patient at the Preserve and was the same age as Alison and Courtney. Hanna 's father asks her to help with the social media aspect of his campaigning. She meets a boy named Liam, who she falls for, despite knowing he is the son of her father 's political opponent. They break up when she learns he has been seeing multiple other girls while dating her, and reconciles with Mike. After Aria is dumped by Noel, she seeks out comfort in Ezra, in hopes of rekindling their romance. However, things are strained between them, and Aria eventually goes back into a relationship with Noel, after discovering Ezra and Klaudia being intimate. The Liars attempt to circumvent `` A 's '' threats by coming clean about their secrets, with varied success. Meanwhile, `` A '' becomes more violent, shoving Emily down a hill at Stockbridge trail. `` A '' sends Spencer an email of Tabitha on the beach with a head injury, indicating that `` A '' was the one who disposed of Tabitha 's body. `` A '' taunts the Liars, stating they will never discover `` A 's '' true identity. Kelsey can not be A. Emily and Spencer have their biggest rivalry. 11 Stunning June 5, 2012 978 - 0 - 06 - 208189 - 6 302 The Liars begin to suspect a woman, Gayle, might be `` A '', when she comes to Rosewood and begins to harass them ; it is revealed that Emily backed out of a deal to let Gayle adopt her daughter in exchange for $50,000 paid under the table. Emily finds herself reconnecting with Isaac while attempting to tell him about her pregnancy, but she fears the repercussions of such a confession. Spencer visits Princeton hoping to join an Eating Club, but `` A '' interferes and spikes Spencer 's pot brownies with LSD and Ritalin. Aria panics when she finds out Noel 's father is a drag queen and ends up putting her relationship with Noel at risk when `` A '' threatens Aria to expose Noel 's father photo publicly. On a tip from `` A '', Hanna begins spying on Mike 's new girlfriend, Colleen. Later she becomes publicly humiliated by `` A '' when she sends everybody a video of Hanna stalking Colleen, and her desperate ways of getting Mike back. Gayle is murdered by `` A '' and it is revealed that she was Tabitha 's stepmother. Tabitha 's father speaks at Gayle 's funeral, and announces that Tabitha 's autopsy showed no trace of alcohol, meaning that she was murdered. He thus plans to re-open the investigation into her death, and threatens the killer that he will find him, both Gayle 's and Tabitha 's killer. The girls get very nervous about this. 12 Burned December 4, 2012 978 - 0 - 06 - 208192 - 6 319 It is revealed that prior to the events of Twisted, the Liars covered up Hanna 's involvement in a car accident that left another girl, Madison, badly injured. While on a school - sponsored cruise in the Caribbean, the Liars uncover clues that suggest `` A '' is more than one person. They begin to suspect Naomi Zeigler of being `` A '', after she befriends Hanna ( who is unaware that Madison is Naomi 's cousin ) and attempts to sabotage Spencer 's new relationship. Aria becomes friends with a boy named Graham, only to discover he is Tabitha 's ex-boyfriend, leading the Liars come to believe that Naomi and Graham are working together as `` A ''. Meanwhile, Emily falls for a stowaway, Jordan, unaware that she is a thief on the run from the authorities. After an explosion on the boat, the Liars go off on their own to bury `` evidence '' of their connection to Tabitha ( Tabitha 's locket, which `` A '' had planted for Noel to find ). `` A '' tampers with their lifeboat, nearly stranding them in the middle of the ocean. The near - death experience pushes the girls into wanting to confess about killing Tabitha. However, as they make plans to come clean about everything, they discover that they were not responsible for Tabitha 's death at all : She had been bludgeoned to death by `` A ''. The Liars finally come to believe that `` A '' is, in fact, Alison, as Emily reveals that she may have helped Alison escape the burning Poconos house in Wanted. Suspiciously though Naomi was at Gayle 's funeral. Fourth arc Book # Title Publication Date ISBN Pages 13 Crushed June 4, 2013 978 - 0 - 06 - 219971 - 3 340 Weeks before the annual Rosewood Day Prom, the four girls are put under much stress. They break down and try being one step ahead of `` A '', and marking off who their suspects could be. In this novel it is revealed there are two people working as A. Spencer, Hanna, and Emily agree that the main suspect is Noel Kahn, Aria 's boyfriend. Aria does n't want to believe it but the facts tell her otherwise. He was on the trip to Jamaica, he went to Iceland. He was good friends with Ali ( he loved her ), and he visited her in the Preserve when she was there. He knew about the twins. He knew enough to make him look like A. Emily tries getting information of out of Ali 's old friends, Iris, ( who we met in ' ' Heartless ). Iris tells Emily little tidbits of Ali, and at Prom Iris recognizes Noel and for sure he was Ali 's secret boyfriend who visited her. Spencer finds an internet blogger, who blogs about Alison DiLaurentis theories. She meets him and actually ends up liking him, finding his name is Chase. He helps Spencer get information on Alison. Hanna, in an attempt to get information on a burned victim from the last book, Graham, starts volunteering at the Burn Clinic. There, Graham is still in a coma and right when he 's about to wake up, he dies - all the information is kept hidden for good. Aria, worried and paranoid about what happened last summer, is trying to handle things with Noel being A, even though she does n't want to believe it. At Prom, Noel admits to loving Ali, and Aria, furious, freaks out and asks Noel if Ali is still alive. He says he does n't know. While Aria is attempting to get away, Noel pins her to the ground. Spencer, Hanna, and Emily arrive and Noel flees. The morning later, Hanna gets a text from A saying to go to the shed in the Rosewood Day back. She and the three other girls go, and just in case bring Cops and police and inside is a supposedly unconscious Noel tied up to a chair. It is not revealed if Noel is dead or alive. The girls get a text, signed by A, informing them that they 've failed to make progress, Noel was n't A, and they are back where they started. 14 Deadly December 3, 2013 978 - 0 - 06 - 219974 - 4 320 The book starts out as the real Alison DiLaurentis is limping out of the burning house in her vacation home right after she tried to kill the liars. It 's seemingly said in the start that she survived by the help of `` Helper A '' her boyfriend. Aria visits Noel in the hospital and it is shown that he is in fact still alive. Agent Fuji comes to the girls after they are arrested for the charges they have committed over the past year. The girls finally admit to Agent Fuji about `` A '' and told her that all of their charges had to be dropped. They also told her that they thought that Alison was still alive and that they needed 24 - hour protection of their family. Agent Fuji tells the girls to give her all of the `` A '' notes and the girls do as they are told. As a result of telling the police, `` A '' gave the police a fake security video of the girls beating up Tabitha before she is killed. The police arrest all of them and told the girls that all of the texts from `` A '' had come from their phones. The girls are put on bail and go home. Emily 's family seem to hate her and Emily and Carolyn get into a fight. As this happens Emily 's mom has a heart attack. Hanna 's father wants nothing to do with her because it will hurt the campaign. After their hearing they are sentenced to go to trial in Jamaica the next day. Certain to find `` A '' they go searching. They find a house by Hanna 's fathers office and go inside. It is small and disgusting. As they are walking in Nick Maxwell comes in pointing a gun at the girls. He is `` Helper A '' Real Ali 's boyfriend. The girls all know him as someone else. Spencer knows him as Phineas, a guy at Penn 's summer program who sold her study drugs. Hanna knew him as Jackson, the bartender who kept on giving Madison drinks and refusing to get a cab, resulting in Hanna getting in a wreck with Madison. Emily knew him as Derrick, a friend she had at her job, telling him all of her secrets. And Aria knew him as Olaf, a guy she stole The Starry Night with while vacationing in Iceland. Right as they realized what was happening Alison shows up with a gun and tells the girls to get in the basement. They girls do as they are told and the go down. They see a mural of Ali on the wall and they are confused. Ali tells them that after she kills them that it is going to look like they did it to be with Ali because they were sad that she was gone. Astonished the girls ask questions. After, Nick and Ali grab gas masks and turn on a poisonous gas. They girls awake in the hospital and Agent Fuji tells them that Nick Maxwell was caught but not Ali. In the epilogue Ali is running away and goes to a little house that Nick did n't know of. She has money and reveals that she is going to lure someone else to kill with her again. 15 Toxic June 3, 2014 9780062287014 336 With A apparently arrested, the girls attempt to move on with their lives. Hanna gets a film offer, and Spencer starts an anti-bullying campaign. However, it is soon revealed that the real A is still seeking vengeance. 16 Vicious December 2, 2014 9780062287045 After being falsely accused of killing Alison, the girls seek to outwit her and avoid jail time. Companion novels Book # Title Publication Date ISBN Pages 0.6 Alison 's Pretty Little Diary September 6, 2010 978 - 0 - 06 - 223336 - 3 14 Ali changed the lives of The Liars forever. But now thanks to this diary never seen before, you finally know what Alison was thinking in the day she picked those four girls to be her new best friends. 4.5 Pretty Little Secrets January 3, 2012 978 - 0 - 06 - 212591 - 0 464 Set between Unbelievable and Wicked, the book is told from the point of view of the second `` A '', Alison DiLaurentis, as she spies on the girls during their Christmas vacation. The novel is divided into a series of four short stories, with each one focusing on the exploits of a specific girl. Spencer : Spencer and her family go to Nana Hastings mansion in Florida, and Spencer falls in love with a tennis player named Colin at the country club. Melissa seems to be helping Spencer win Colin 's heart, but Colin ends up taking an interest in Melissa. During the trip, Spencer and her mother also run into Mrs. DiLaurentis several times, and Spencer is confused by her mother 's strange behavior around Mrs DiLaurentis. Spencer also decides to fight for Colin. After Colin dumps Melissa to go out with her, Spencer and Melissa discover that Colin 's actually 33 years old and also has a wife and child. Spencer and Melissa decide to team up to get revenge on Colin by putting crushed Viagra in his Aminospa vitamin water right before his important tennis game. In the end, they all have a fun vacation, but Spencer worries that someone has been following her. Melissa and Spencer seem to briefly make up in this, hence the sisters ' wary friendship in Wicked. Emily : Emily is asked to go undercover as Santa Claus at the new mall, in order to catch 4 girls who work as elves there, who are suspected of vandalizing Christmas decorations around town, including Emily 's mom 's baby Jesus ceramic figure. The 4 girls, who call themselves the `` Merry Elves '', take a liking to Emily, and it 's revealed that one of the girls, Cassie, was close with Alison. Emily accompanies the girls on their biggest prank yet, but Emily 's mom uses her phone to track her, and the Merry Elves get caught. Eventually, the elves forgive Emily after she bails them out of jail. In the end, everyone realizes the true meaning of Christmas, but Emily ca n't shake off the weird feeling that someone is following her. It is revealed that A is blonde ( she will later be revealed as Alison ) as Emily sees a blonde figure run off. Hanna : Hanna joins a boot camp after thinking she gained too much weight at a holiday party. She develops feelings for the instructor, Vince. She also develops a rival, Dinah, another girl who also likes Vince. After competing for Vince 's affection, she and Dinah become friends after catching Kate making out with the mall 's new Santa ( prior to Emily ), something which Hanna also photographs. After agreeing to stop chasing Vince, she celebrates by going out for drinks with Dinah, where Dinah admits she knew Alison. Hanna goes home drunk, causing her to oversleep. As she arrives at boot camp, she discovers Vince and Dinah kissing, revealing that Dinah only pretended to be friends with Hanna to have Hanna let down her guard. Hanna flees the scene, devastated, and is confronted by Kate, who, after receiving a tip - off, followed Hanna around, taking unflattering photos of her at boot camp, which she threatens to put on Facebook. Hanna counterattacks by showing Kate the pictures of her and Santa, causing Kate to back off. Hanna also improves her relationship with her father, who gives Hanna her grandmother 's Cartier locket for Christmas / Hanukkah. Hanna has a happy Christmas / Hanukkah, despite the fact that she thinks someone other than Kate has been watching her every move. Some of what Dinah said may be true such as she knew Alison. But it is likely she made most of it up to get Hanna 's trust. Aria : Aria goes with her father and Mike to Bear Claw Resort, but leaves to go back home after finding out that Byron invited Meredith along as well. Upon arriving at home, Aria 's surprised to see Halbjorn, an old boyfriend of hers from Iceland. Halbjorn tells her that he 's running from the Icelandic police who 're after him because he protested against the demolition of a puffin sanctuary. Unfortunately, his travel visa only lasts for a week. Aria proposes the idea of marrying him, and the two head off to Atlantic City to elope. At the hotel, they attend a magic show involving two panthers, which greatly angers Halbjorn, who cares a lot about the environment. After getting married the following day, which requires Aria to forge her mother 's signature and lie about her age, they go to the place where the panthers are kept. After convincing Halbjorn not to release the panthers, they go back to the hotel. The next morning, Aria wakes up to find Halbjorn gone and his clothes missing as well. On the lobby 's TV, Aria sees that Halbjorn ended up releasing the panthers anyway. Aria goes to the courthouse and confesses to lying about her age and forging her mother 's signature, making the marriage null and void. Upon returning to Rosewood, she is joined by Mike and Byron, who know nothing about her marriage. As they watch TV, it shows that Halbjorn has been caught, and it also reveals that he 's done these sorts of things in the past, including trying to blow up a demolition office. Aria 's satisfied with breaking up with him, but is paranoid about someone following her. In Wicked, it 's briefly stated that Aria and Meredith did converse about the baby. The book ends with a sign - off from the new `` A, '' ( as always ) who says that the Liars ' lives are going to get a lot worse. All of which comes true... 0.5 Ali 's Pretty Little Lies January 2, 2013 978 - 0062233363 304 Before there was `` A, '' there was `` Alison DiLaurentis ''. Boys wanted to date her, girls wanted to be her and somebody wanted her dead. It 's the end of seventh grade, and `` Alison DiLaurentis '' and her friends are the alpha girls of Rosewood Day. `` Ali '' runs her clique with an iron fist, and she 's got enough dirt on Hanna, Emily, Aria and Spencer to keep them in line. But `` Ali 's '' hiding a dark secret of her own, something so huge it would destroy everything if it ever got out. She 's desperate to keep the perfect life she 's worked so hard to build, but in Rosewood deadly secrets have deadly consequences. Set in the weeks leading up to `` Ali 's '' murder, this special Pretty Little Liars tale is told by the prettiest little liar of all : `` Ali '' herself. For the first time ever, we see how the mystery began -- and how `` Alison DiLaurentis ' '' life ended. Note : This book is titled Ali 's Pretty Little Lies but it 's actually about her twin sister, Courtney, who pretended to be Alison because she did n't want to go to a psych ward. This book reveals a lot of secrets. References Jump up ^ `` Children 's Series Best Sellers ''. The New York Times. June 22, 2008. Retrieved May 10, 2012. Jump up ^ `` Children 's Series Best Sellers ''. The New York Times. July 26, 2009. Retrieved May 10, 2012. Jump up ^ `` Children 's Series Best Sellers ''. The New York Times. February 5, 2012. Retrieved May 10, 2012. Jump up ^ Amazon.com. `` Kindle Worlds : Pretty Little Liars ''. Retrieved 2014 - 08 - 23. Jump up ^ `` Betrayed ( Pretty Little Liars # 14 ) ''. GoodReads. Retrieved December 29, 2012. 308 Jump up ^ `` Toxic ( Pretty Little Liars # 15 ) ''. GoodReads. Retrieved December 29, 2012. 326 Jump up ^ `` Exposed ( Pretty Little Liars # 16 ) ''. GoodReads. Retrieved December 29, 2012. External links Wikimedia Commons has media related to Pretty Little Liars ( book series ). Official website Pretty Little Liars Episodes Season 1 5 6 7 Characters `` A '' Alex Drake Alison DiLaurentis Aria Montgomery Charlotte Drake Emily Fields Hanna Marin Jenna Marshall Mary Drake Melissa Hastings Mona Vanderwaal Red Coat Sara Harvey Spencer Hastings Sydney Driscoll Related Book series 2006 novel Rosewood, Pennsylvania Pretty Dirty Secrets Ravenswood Pretty Little Liars : The Perfectionists Works by Sara Shepard Novels Pretty Little Liars series 2006 novel The Lying Game series Adaptations Pretty Little Liars ( 2010 -- 2017 ) The Lying Game ( 2011 -- 2013 ) Ravenswood ( 2013 -- 2014 ) Pretty Little Liars : The Perfectionists ( 2019 ) Retrieved from `` https://en.wikipedia.org/w/index.php?title=Pretty_Little_Liars_(book_series)&oldid=865153440 '' Categories : Book series introduced in 2006 American young adult novels Novel series Pretty Little Liars HarperCollins books Fictional identical twins Hidden categories : Use mdy dates from March 2014 Commons category with page title different than on Wikidata Talk Contents About Wikipedia Čeština Español Français Italiano Nederlands Polski Português Русский Slovenščina ไทย 4 more Edit links This page was last edited on 22 October 2018, at 02 : 53 ( UTC ). Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: what is the first book of pretty little liars
Answer: Pretty Little Liars