The Trials of Apollo - wikipedia The Trials of Apollo The Trials of Apollo Logo of the series The Hidden Oracle ( 2016 ) The Dark Prophecy ( 2017 ) The Burning Maze ( 2018 ) The Tyrant 's Tomb ( 2019 ) Author Rick Riordan Cover artist John Rocco Country United States Language English Genre Greek mythological fiction, fantasy, adventure and children 's fiction Publisher Hyperion Books Published 2016 -- present Media type Print ( hardcover and paperback ), audiobook, e-book No. of books 3 ( as of 2018 ) Preceded by The Heroes of Olympus The Trials of Apollo is a pentalogy of fantasy adventure and mythological fiction novels written by American author Rick Riordan that collectively form a sequel to the Heroes of Olympus series. It is set in the same world as other Riordan tales, and references characters and happenings from earlier series. A supplementary book, Camp Half - Blood Confidential, has also been released in addition to the main series. The first book in the series, The Hidden Oracle, was released on May 3, 2016. The second book in the series, The Dark Prophecy, was released on May 2, 2017. The third book in the series, The Burning Maze, was released on May 1, 2018. The fourth book in the series, The Tyrant 's Tomb, will be released in October 2019. Contents 1 Synopsis 2 Books 2.1 The Hidden Oracle 2.2 The Dark Prophecy 2.3 The Burning Maze 2.4 The Tyrant 's Tomb 3 Supplementary works 3.1 Camp Half - Blood Confidential 4 Main characters 5 References Synopsis The series follows the trials of the god Apollo, who has been turned into a human as punishment from his father and king of the gods Zeus. Zeus is angry with Apollo for a variety of reasons, most notably for the younger god 's allowing his Roman descendant Octavian to rise to power during The Heroes of Olympus series by giving him his blessing. The final book of The Heroes of Olympus, The Blood of Olympus, takes place about six months before the beginning of The Trials of Apollo. Books The Hidden Oracle Main article : The Hidden Oracle The Hidden Oracle is the first book of the series. It is told in first - person by the main character Apollo, and uses haiku for chapter titles. The book was released on May 3, 2016. The book opens with Apollo landing in an alley in New York City -- in the form of a mortal teenager named Lester Papadopoulos because he had been one of the people who had encouraged the war between the Greeks and the Romans. He meets Meg McCaffrey, a homeless daughter of Demeter. Believing that he must only undertake some simple quest to regain his immortality, Apollo / Lester and Meg travel to Camp Half - Blood, where they learn most of the world 's Oracles have stopped working. The two undertake a quest to locate and protect the one remaining oracle, hoping also to learn how to help the other oracles and to regain Apollo 's immortality. Apollo ( Lester ) also finds out that the first oracle he has to save is heavily guarded by the mysterious ' beast '. Will Apollo ( Lester ) be able to accomplish this task ? As Apollo falls from Mount Olympus into a dumpster, he is attacked by two muggers - sent by the first emperor - and is rescued by Meg, a daughter of Demeter. She claims his service and the two set off to Percy Jackson 's house. The trio drives to Camp Half - Blood, but also face deadly monsters during their journey. Once they arrive, they learn of the ' talking trees ' and demigod disappearances. Apollo and Meg meet the campers, along with Nico di Angelo ( Son of Hades ) and Will Solace ( son of Apollo ). The two are openly dating and help Meg and Apollo when fighting the first emperor. After getting lost in the labyrinth through a camp sanctioned activity, Meg and Apollo leave to find the Grove of Dodonna, a grove of trees that tell prophecies. This oracle does not belong to Apollo, so the emperors can not control it. After fighting giant ants that kidnap Meg, Apollo confronts geyser spirits and finally finds Meg and the Grove. At the grove, they find the missing demigods in a trap and the Beast himself, emperor Nero, Meg 's stepfather. Meg switches loyalties, yet the two succeed in opening the Grove of Dodona and calming the enraged oracles. Meg takes off, and Apollo saves the missing demigods. As Apollo reaches Camp Half - Blood, he sees that Nero sent a colossal statue of himself to destroy the camp. After regaining a few of his former powers, Apollo destroys the statue and promises to find Meg again. Just as the fight ends, Leo and Calypso ( aboard Festus ) arrive at the camp. The three realize that they must travel to free the next oracle. The Dark Prophecy Main article : The Dark Prophecy The Dark Prophecy is the second book in the series. It was released on May 2, 2017. The book continues the story of Apollo as the mortal Lester, as he leaves the safety of Camp Half - Blood and journeys across North America to restore the remaining four Oracles and defeat the triumvirate of Roman emperors - turned - Gods, while also being helped by Leo Valdez, the now - mortal Calypso and Festus the bronze dragon. The Burning Maze Main article : The Burning Maze The Burning Maze is the third book in the series. It released on May 1, 2018. The book follows Lester Papadopoulos / Apollo, Meg McCaffrey and Grover Underwood while they try to rescue Herophile, an Oracle that speaks only in puzzles, from the Roman emperor Caligula and his talking horse, Incitatus. In the process, they met some strixes that fed only on blood. They are repelled using strawberries. While sleeping, Apollo dreams about Herophile telling him that he must save her even though it 's a trap. When he wakes up, he finds himself in Grover 's base. When Meg wakes up, they find the line from the prophecy, ' Demeter 's daughter finds her ancient roots ' to occur. Apollo and Grover go out to try to find Gleeson Hedge in an army store called Macro 's Military Madness. They then find out that Macro, the store owner is actually Naevius Sutorius Macro, working for Caligula. He attacks them with an army of automatons. By activating ' command sequence : Daedalus twenty three ', they defeat Macro with his own robots. They then navigate the maze with the help of Piper McLean and Jason Grace and find defeat Medea, the sorceress who was working with the emperor. Around this time Caligula ( the emperor ) kills Jason Grace. The next day, Grover, Meg and Apollo using Caligula 's shoes walk the Labyrinth. they free Herophile and discover a new prophecy : `` Apollo faces death in Tarquin 's tomb unless the doorway to the soundless god is opened by... ''. They also discover that they need help from ' Bellona 's daughter ', Reyna, the praetor of camp Jupiter. The Tyrant 's Tomb The Tyrant 's Tomb is the fourth book in the series. It will be released in October 2019, and the story will be set in Northern California, most likely around Camp Jupiter. Supplementary works Camp Half - Blood Confidential A companion book titled From Percy Jackson : Camp Half - Blood Confidential was released on May 2, 2017. Main characters Main article : List of characters in mythology novels by Rick Riordan § Camp Half - Blood chronicles Lester Papadopoulos ( Apollo ) : Lester Papadopoulos is the mortal teenage incarnation of the god Apollo and is the main character of the Trials of Apollo series. He has to deal with such ordinary human problems as zits, flabby muscles, and feeling pain once he becomes mortal. He is looking for Oracles to restore in an attempt to earn his way back to Mount Olympus. Meg McCaffrey : Meg McCaffrey is a twelve - year - old demigod who looks like a colorfully dressed street urchin. She is fierce, bossy, and tight - lipped about her past. She has a fearsome protector named Peaches. Peaches : Peaches is a Karpos that comes to Meg McCaffrey when she is in need. Leo Valdez : Leo Valdez is the son of God Hephaestus. He has returned after being revived from the Physician 's Cure after he was killed in The Blood of Olympus. Calypso : Calypso is the daughter of the Titan Atlas. After being imprisoned on the island of Ogygia for millennia, Leo Valdez rescued her and brought her to the Waystation to live temporarily. She assists Lester throughout The Dark Prophecy. Grover Underwood : Grover Underwood is a Satyr and the best friend of Percy Jackson. He is summoned by Meg to guide them through the Labyrinth. Piper McLean : Piper McLean is the daughter of the goddess Aphrodite. She and her father have become bankrupt due to Triumvirate Holdings. References Jump up ^ `` Rick Riordan announces ' Trials of Apollo ' series set in Percy Jackson 's world ''. Hypable. October 6, 2015. Retrieved September 6, 2016. ^ Jump up to : Riordan, Rick ( May 11, 2016 ). `` The Hidden Oracle ! ''. RickRiordan.com. Rick Riordan. Retrieved January 6, 2017. Jump up ^ `` ' Trials of Apollo ' book 2 info revealed on heels of ' Hidden Oracle ' release ''. Hypable. May 5, 2016. Retrieved September 19, 2016. Jump up ^ Riordan, Rick ( 2016 ). The Hidden Oracle. Los Angeles : Disney - Hyperion. ISBN 9781484732748. Jump up ^ `` The Dark Prophecy -- Rick Riordan ''. rickriordan.com. Retrieved 2018 - 02 - 27. Jump up ^ http://rickriordan.com/series/the-trials-of-apollo/ The Rick Riordan official Website Jump up ^ `` From Percy Jackson : Camp Half - Blood Confidential ( An Official Rick Riordan Companion Book ) : Your Real Guide to the Demigod Training Camp ( Trials of Apollo ) ''. Amazon. Retrieved March 31, 2017. The Camp Half - Blood Chronicles by Rick Riordan Percy Jackson & the Olympians Novels The Lightning Thief The Sea of Monsters The Titan 's Curse The Battle of the Labyrinth The Last Olympian The Demigod Files Films Percy Jackson & the Olympians : The Lightning Thief Percy Jackson : Sea of Monsters Film cast members Stage The Lightning Thief ( musical ) The Heroes of Olympus Novels The Lost Hero The Son of Neptune The Mark of Athena The House of Hades The Blood of Olympus The Demigod Diaries The Trials of Apollo Novels The Hidden Oracle The Dark Prophecy The Burning Maze Other Percy Jackson 's Greek Gods Percy Jackson 's Greek Heroes The Son of Sobek The Staff of Serapis The Crown of Ptolemy Characters Percy Jackson Retrieved from `` https://en.wikipedia.org/w/index.php?title=The_Trials_of_Apollo&oldid=863142368 '' Categories : The Trials of Apollo Young adult novel series Talk Contents About Wikipedia Español Français Italiano עברית Português Edit links This page was last edited on 9 October 2018, at 00 : 03 ( 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 fourth book in the trials of apollo
Answer: The Tyrant's Tomb