List of Sherlock episodes - Wikipedia List of Sherlock episodes Sherlock is a television crime drama that presents a contemporary adaptation of Sir Arthur Conan Doyle 's Sherlock Holmes detective stories. Created by Steven Moffat and Mark Gatiss, it stars Benedict Cumberbatch as Sherlock Holmes and Martin Freeman as Doctor John Watson. The first series of three episodes aired in 2010, while series two aired in 2012, and a third series aired in the first quarter of 2014. The third series has become the UK 's most watched drama series since 2001. A single episode aired in 2016, as a Victorian - era special. Sherlock has been sold to over 200 territories. Sherlock depicts `` consulting detective '' Holmes, assisting the Metropolitan Police Service, primarily Detective Inspector Greg Lestrade ( Rupert Graves ), in solving various crimes. Holmes is assisted by his flatmate, Dr John Watson, who has returned from military service in Afghanistan. Although the series depicts a variety of crimes and perpetrators, Holmes ' conflict with his archenemy Jim Moriarty ( Andrew Scott ) is a recurring feature. Molly Hooper ( Louise Brealey ), a pathologist at Bart 's Hospital occasionally assists Holmes in his cases. Other recurring roles include Una Stubbs as Mrs Hudson, Holmes and Watson 's landlady ; and co-creator Mark Gatiss as Sherlock 's brother, Mycroft Holmes. In January 2014, Moffat confirmed that the series would have a fourth series, and that a fifth series had been plotted. As of 15 January 2017, 13 episodes of Sherlock have aired, including one special, concluding the fourth series. Contents 1 Series overview 2 Episodes 2.1 Series 1 ( 2010 ) 2.2 Series 2 ( 2012 ) 2.3 Series 3 ( 2014 ) 2.4 Special ( 2016 ) 2.5 Series 4 ( 2017 ) 3 References 4 External links Series overview Series Episodes Originally aired Average ratings ( millions ) First aired Last aired UK U.S. 25 July 2010 ( 2010 - 07 - 25 ) 8 August 2010 ( 2010 - 08 - 08 ) 8.37 N / A 1 January 2012 ( 2012 - 01 - 01 ) 15 January 2012 ( 2012 - 01 - 15 ) 10.23 4.4 1 January 2014 ( 2014 - 01 - 01 ) 12 January 2014 ( 2014 - 01 - 12 ) 11.82 6.6 Special 1 January 2016 ( 2016 - 01 - 01 ) 11.64 3.4 1 January 2017 ( 2017 - 01 - 01 ) 15 January 2017 ( 2017 - 01 - 15 ) 10.00 N / A Episodes Series 1 ( 2010 ) No. overall No. in series Title Directed by Written by Original air date Viewers ( millions ) `` A Study in Pink '' Paul McGuigan Steven Moffat 25 July 2010 ( 2010 - 07 - 25 ) ( UK ) 24 October 2010 ( U.S. ) 8.70 ( UK ) N / A ( U.S. ) The police investigate the deaths of a series of people who all appear to have committed suicide by taking a poisonous pill. They turn to their unofficial consultant, Sherlock Holmes, who deduces various elements pointing to a serial killer. Meanwhile, Holmes is introduced to John Watson, a former soldier who served in Afghanistan, and the pair immediately move into a flat in Baker Street. John Watson slowly gets to know and trust Sherlock despite police officer Sally Donovan ( Vinette Robinson ) warning him that Holmes is a psychopath and will one day be responsible for murder. Sherlock 's brother Mycroft ( Mark Gatiss ), at first not revealing his identity, arranges a meeting with Watson and asks whether he will spy on Sherlock for money, but John refuses. After a series of incidents, the person responsible for the deaths, a taxicab driver ( Phil Davis ), reveals that his victims took their own lives by playing a game of Russian roulette with two pills : one fatally poisonous, the other safe. Before Sherlock can play the cabbie 's game, John shoots the cabbie from an opposite building. Before he dies, the taxicab driver reveals that `` Moriarty '' was his sponsor. Loosely based on the first Sherlock Holmes novel, A Study in Scarlet. `` The Blind Banker '' Euros Lyn Stephen Thompson 1 August 2010 ( 2010 - 08 - 01 ) ( UK ) 31 October 2010 ( U.S. ) 7.74 ( UK ) N / A ( U.S. ) Sherlock is hired by an old friend to investigate a mysterious break - in at a bank in the City. He discovers that symbols spray - painted onto an office wall are a coded message intended for an employee of the bank, who is later discovered dead in his flat. The next day, a journalist is killed and the same symbols are found nearby. Sherlock and John follow a trail of clues that link the two dead men to a Chinese smuggling ring, who are trying to retrieve a valuable item that one of the dead men stole. Sherlock eventually cracks the coded message based on Suzhou numerals and a book cipher, but not before John and Sarah ( John 's date ) are kidnapped by the criminals, who believe that John is Sherlock. Sherlock rescues John and Sarah, but the leader of the gang escapes. Later, the leader of the gang is in communication with her superior, who is identified by the initial `` M ''. She is then shot by a sniper. Loosely based on the short story `` The Adventure of the Dancing Men '', the storyline also incorporates elements from other Sherlock Holmes stories ; the concept of coded messages, the markings on the feet of the Black Lotus members and the plot of escaping a secret society, then being tracked to and killed in England all feature in The Valley of Fear. A murder victim being found inside a locked room, accessible only by climbing, alludes to The Sign of the Four. `` The Great Game '' Paul McGuigan Mark Gatiss 8 August 2010 ( 2010 - 08 - 08 ) ( UK ) 7 November 2010 ( U.S. ) 8.66 ( UK ) N / A ( U.S. ) Sherlock is commissioned by Mycroft to investigate the suspicious death of a government employee, who was working on a top - secret defence project : the Bruce - Partington Project. After rejecting the case and handing it over to John, Sherlock begins to be taunted by a criminal who puts his victims into explosive vests and sets Sherlock deadlines to solve the apparently unrelated cases, which include a twenty - year - old cold case involving the shoes of a drowned boy, the disappearance of a businessman, the death of a TV personality, and the assassination of a guard of an art gallery by the `` Golem ''. As Sherlock solves the cases, he finds links between them. After clearing up the original case of the civil servant, Sherlock tries to force his unseen adversary to reveal himself. Near the end of the episode, Sherlock and `` Jim Moriarty '' reach a standoff, where Jim reveals that he is responsible for the crimes. In the final seconds, Sherlock Holmes points his gun at a bomb on the floor that had been strapped to John. The episode 's storyline is somewhat derived from `` The Adventure of the Bruce - Partington Plans '' and makes references to `` The Five Orange Pips '' at various points ( as per the five bomb victims and electronic beeps on the phone ) in addition to other works of Sir Arthur Conan Doyle. Series 2 ( 2012 ) No. overall No. in series Title Directed by Written by Original air date Viewers ( millions ) `` A Scandal in Belgravia '' Paul McGuigan Steven Moffat 1 January 2012 ( 2012 - 01 - 01 ) ( UK ) 6 May 2012 ( U.S. ) 10.66 ( UK ) 3.2 ( U.S. ) Mycroft hires Sherlock and John to retrieve compromising photos of a minor royal, which are held on the camera phone of Irene Adler ( Lara Pulver ), a ruthless and brilliant dominatrix who also trades in classified information extracted from her rich and powerful clients. Sherlock obtains Adler 's phone, but discovers it is booby - trapped and requires a code to disarm it. When Adler discovers that the CIA are on her trail, she disappears and is then apparently killed, only to reappear to ask John to get her camera phone back from Sherlock. Weeks later when the coast is clear, Adler tricks Sherlock into deciphering a coded message on her phone which she obtained from another well - connected client. She sends the message to Moriarty, who in turn uses it to foil a British counter-terror operation. She almost succeeds in blackmailing Mycroft, but Sherlock finally cracks the password for the phone, leaving Adler without the protection she needs to survive. The episode concludes as Mycroft tells John that she has been killed by a terrorist group in Pakistan, while in fact she was secretly rescued by Sherlock. Based on the short story `` A Scandal in Bohemia ''. `` The Hounds of Baskerville '' Paul McGuigan Mark Gatiss 8 January 2012 ( 2012 - 01 - 08 ) ( UK ) 13 May 2012 ( U.S. ) 10.27 ( UK ) N / A ( U.S. ) Sherlock and John are contacted by Henry Knight ( Russell Tovey ), a man traumatised by the death of his father by a monstrous hound on Dartmoor years before. Investigating Dewer 's Hollow, a local spot where the beast was allegedly seen, as well as the nearby Ministry of Defence testing site Baskerville, Sherlock and John uncover a conspiracy wherein one of the Baskerville scientists, Dr. Frankland ( Clive Mantle ), is continuing the work of H.O.U.N.D., an aborted project to create a hallucinogenic gas for military use. Sherlock and John discover that the legendary hound is an ordinary dog used for publicity that the hallucinogenic gas makes appear as a demonic monster. The `` hound '' that killed Henry 's father was actually Frankland wearing a red - lensed gas mask and a T - shirt bearing the logo of the H.O.U.N.D. group. Confronting both the dog and Frankland at Dewer 's Hollow, John and Lestrade shoot the dog. Frankland attempts to flee, but dies when he runs into a minefield. In the final scene, Mycroft releases a confined Jim Moriarty. Based on the novel The Hound of the Baskervilles. 6 `` The Reichenbach Fall '' Toby Haynes Stephen Thompson 15 January 2012 ( 2012 - 01 - 15 ) ( UK ) 20 May 2012 ( U.S. ) 9.78 ( UK ) N / A ( U.S. ) This episode 's plot summary may be too long or excessively detailed. Please help improve it by removing unnecessary details and making it more concise. ( April 2016 ) Moriarty launches a simultaneous heist on the Tower of London, Bank of England, and Pentonville Prison using just a few lines of code that can break any security ; crimes for which he allows himself to be captured and put on trial. He secures not - guilty through intimidating the jury and visits Sherlock, explaining he still intends to `` burn '' him, taunting him with a `` final problem '' for him to solve. Soon afterwards, Moriarty arranges for the kidnapping of an American ambassador 's children who are terrified of Sherlock once he has them rescued, leading to Sherlock becoming a suspect. Sherlock escapes arrest, and soon learns Moriarty is using the alias of an actor who claims to have been hired by Sherlock and has seeded the press with a story of Sherlock being a fraud. The two meet on the roof of a hospital, where Moriarty explains that assassins will kill John, Mrs. Hudson, and Lestrade if Sherlock does not commit suicide ; he wants Sherlock to do this to cement his story after explaining that his `` god code '' was a myth. After a tense conversation, in which Moriarty realises the two are enough alike that Sherlock would be willing to do anything to Moriarty to get him to call off the assassins, Moriarty kills himself to force Sherlock to do the same. Sherlock calls John and confesses to being a fraud ( which John refuses to believe ). John pleads for him to come down. Sherlock states his final `` Goodbye '' and then steps off the roof. Inspired by the short story `` The Adventure of the Final Problem ''. The title alludes to the Reichenbach Falls, where Holmes and Moriarty supposedly fall to their deaths in the original story. Series 3 ( 2014 ) No. overall No. in series Title Directed by Written by Original air date Viewers ( millions ) -- -- `` Many Happy Returns '' Jeremy Lovering Mark Gatiss and Steven Moffat 24 December 2013 ( 2013 - 12 - 24 ) N / A Anderson believes that Sherlock is still alive after the Reichenbach fall. He confides in Lestrade and tells him his theory for his existence. Anderson believes a string of events ranging from Tibet to India to Germany involve Sherlock 's assistance, and this is due to Sherlock not being able to stop investigating. Lestrade tells Anderson that Sherlock is definitely dead and goes to visit John, who has moved out of Baker Street following Sherlock 's death. Lestrade gives John some of Sherlock 's old items, including a video message from John 's birthday. In the message Sherlock states that he will see John very soon and tells him to have a good birthday without him as he is ' busy '. Broadcast online only, this mini-episode serves as a prequel to the third series and was made available on BBC iPlayer, BBC Red Button service and the BBC 's YouTube channel. It is not based on any particular story by Arthur Conan Doyle. 7 `` The Empty Hearse '' Jeremy Lovering Mark Gatiss 1 January 2014 ( 2014 - 01 - 01 ) ( UK ) 19 January 2014 ( U.S. ) 12.72 ( UK ) 4.0 ( U.S. ) Two years after his reported Reichenbach Fall demise, Sherlock, who has been cleared of all fraud charges against him, returns with Mycroft 's help to a London under threat of terrorist attack. He tries to convince John - who has moved on and now has a girlfriend, Mary Morstan ( Amanda Abbington ) - to help ; however, John is angry that Sherlock did not tell him he was alive. Instead, Sherlock enlists Molly to assist him, but when John is kidnapped by unknown assailants and is rescued by Sherlock and Mary, John returns to help find the terrorists and an underground plot to blow up the Houses of Parliament during an all - night sitting on Guy Fawkes Night. Based on the short story `` The Adventure of the Empty House '', and `` The Lost Special '' with numerous references to other works by Sir Arthur Conan Doyle, and other adaptations of the original stories. 8 `` The Sign of Three '' Colm McCarthy Stephen Thompson, Steven Moffat & Mark Gatiss 5 January 2014 ( 2014 - 01 - 05 ) ( UK ) 26 January 2014 ( U.S. ) 11.38 ( UK ) 2.9 ( U.S. ) It is John and Mary 's wedding day and Sherlock is daunted by the task of delivering a Best Man 's speech. As part of the speech, he recounts cases they have worked on including a soldier being stalked and somehow stabbed in a locked shower, a ghost dating women he dubs `` The Mayfly Man '', the last being part of John 's disastrous stag night, among others. Before his speech ends, he realises that a murderer is present among the guests intent on killing John 's old friend, Major Sholto. Sherlock saves the targeted guest, and then informs John and Mary of the meaning of the sign of three ; namely that Mary is pregnant. The title is based on the Holmes novel The Sign of the Four. 9 `` His Last Vow '' Nick Hurran Steven Moffat 12 January 2014 ( 2014 - 01 - 12 ) ( UK ) 2 February 2014 ( U.S. ) 11.38 ( UK ) 3.0 ( U.S. ) Stolen letters lead Sherlock into conflict with Charles Augustus Magnussen, `` the Napoleon of blackmail '' who knows the personal weakness of every person of importance in the Western world. During the investigation Sherlock is shot and nearly killed by Mary, who is being blackmailed by Magnussen. After waking up from near - death, Sherlock escapes the hospital and lures Mary to an abandoned building, where he tricks her into revealing her false identity and attempted murder while John is listening nearby. Months later, Sherlock drugs everyone at the Holmes family Christmas party, steals Mycroft 's laptop full of state secrets, and he and John take the laptop to Magnussen to trade for all of the files on ' Mary Morstan '. It is revealed that Magnussen keeps no files ; it is all in his near - perfect photographic memory. To protect John, Mary, and their forthcoming child, Holmes kills Magnussen in front of Mycroft and several other witnesses, and as a result is sent off on a suicidal assignment overseas. However, he is brought back almost immediately because of a video being broadcast all over London with Jim Moriarty 's face asking `` Did you miss me ? '' The title is based on Doyle 's short story `` His Last Bow '', whereas the plot contains elements of two other short stories, `` The Adventure of Charles Augustus Milverton '' and `` The Man with the Twisted Lip ''. Special ( 2016 ) No. overall Title Directed by Written by Original air date Viewers ( millions ) 10 `` The Abominable Bride '' Douglas Mackinnon Steven Moffat and Mark Gatiss 1 January 2016 ( 2016 - 01 - 01 ) 11.64 ( UK ) 3.4 ( U.S. ) Sherlock, under the influence of drugs, enters his mind palace to solve a case from Victorian times about a bride shooting herself in the head and rising from the grave to kill her husband. If he can solve the murder it might lead him to how Moriarty has risen from the grave after similarly shooting himself in the head. He solves the case, and concludes that Moriarty is indeed dead, but `` is back ''. A Victorian - themed episode, the title of which is based on the quote ( `` Ricoletti of the club foot and his abominable wife '' ) from `` The Adventure of the Musgrave Ritual '', which refers to a case mentioned by Sherlock Holmes. The episode also alludes to `` The Five Orange Pips '' and mentions `` The Adventure of the Blue Carbuncle '', both from The Adventures of Sherlock Holmes. Series 4 ( 2017 ) No. overall No. in series Title Directed by Written by Original air date Viewers ( millions ) 11 `` The Six Thatchers '' Rachel Talalay Mark Gatiss 1 January 2017 ( 2017 - 01 - 01 ) 11.33 ( UK ) 3.7 ( U.S. ) Sherlock is asked to investigate the mysterious death of a young man, which he solves quickly but he is led into another mystery when a bust of Margaret Thatcher owned by the dead man 's father is smashed. Further busts are smashed and Sherlock discovers that the mystery is linked to Mary and her past as a government agent. A figure from her past is bent on revenge in the belief that Mary betrayed him, but it is discovered that the traitor was the secretary of a British Parliamentary member. Mary is killed by the secretary when jumping in front of a bullet meant for Sherlock. John blames Sherlock for Mary 's death, and their relationship is fractured. The title is loosely based on the Doyle short story `` The Adventure of the Six Napoleons ''. The plot contains elements of other short stories, `` The Adventure of the Engineer 's Thumb '' and `` The Adventure of the Yellow Face ''. 12 `` The Lying Detective '' Nick Hurran Steven Moffat 8 January 2017 ( 2017 - 01 - 08 ) 9.53 ( UK ) N / A ( U.S. ) Sherlock is contacted by the daughter of entrepreneur Culverton Smith, who she claims has confessed to a murder, but she does not know who the victim was as her father has used a drug on her that inhibits memory. Sherlock deduces that her father is a serial killer and sets out to expose him, but he has returned to narcotics use since Mary 's death and unable to clearly distinguish his own thoughts from reality. He confronts and attacks Smith, and John is forced to subdue him. While recovering in the hospital, Smith appears in Sherlock 's room, confesses and then tries to kill him. John bursts in just in time to save Sherlock, who reveals that his behavior up to that point was not just an elaborate ploy to expose Smith, but also fulfilling Mary 's last wish for him to `` Save John ''. Later John 's therapist reveals that she is actually Sherlock 's secret sister, Eurus, and has been using disguises to manipulate both Sherlock and Watson. The episode ends with Eurus firing a shot at John. Title and plot elements based loosely on the Doyle short story `` The Adventure of the Dying Detective ''. 13 `` The Final Problem '' Benjamin Caron Mark Gatiss and Steven Moffat 15 January 2017 ( 2017 - 01 - 15 ) 9.06 ( UK ) N / A ( U.S. ) Sherlock and Watson -- who had been shot with a tranquilizer by Eurus -- trick Mycroft into acknowledging her existence. Eurus steps up her attacks on Sherlock, culminating in the bombing of his Baker Street apartment. Sherlock, Watson and Mycroft venture forth to Sherrinford, a maximum - security psychiatric facility where Eurus is housed. Although Mycroft is skeptical at the suggestion that she has escaped, the trio discover that Eurus has compromised the staff and controls the entire Sherrinford asylum. She subjects the trio to a series of ordeals, testing their morals by forcing them to choose which of her victims live and die and ultimately forcing Sherlock to confront the memory of `` Redbeard '', a childhood friend whose death set in motion events that saw Eurus incarcerated. Realising that she will continue to test him until someone he cares for dies, Sherlock tries to connect with her on an emotional level, offering her the love and relationship with a brother that she never had, and Eurus stands down. Sherlock and Watson return to the Baker Street apartment, where they find another message from Mary imploring them to stay together. A time lapse montage shows them rebuilding the Baker Street flat to its original lived - in form before meeting a series of unusual clients. The title matches the Doyle short story `` The Adventure of the Final Problem '', but the plot contains elements from the short stories `` The Adventure of the Musgrave Ritual '', `` The Adventure of the Three Garridebs '', and `` The Adventure of the Gloria Scott ''. References Jump up ^ Jones, Paul. `` Sherlock season 3 is most watched BBC drama series ever ''. Radio Times. Retrieved 30 May 2015. Jump up ^ BBC Worldwide Showcase ( 23 February 2012 ). Sherlock in five languages. YouTube. Retrieved 30 May 2015. Jump up ^ Denham, Jess ( 9 January 2014 ). `` Sherlock writers plot fourth and fifth series ''. The Independent. Retrieved 14 September 2016. Jump up ^ `` Sherlock Returns ''. One8One. 2013. Retrieved 22 February 2015. Jump up ^ `` Sherlock Returns ''. One8One. 2013. Retrieved 22 February 2015. ^ Jump up to : `` Sundays on PBS Remain TV 's Top Destination for Drama ''. PBS. 26 March 2014. Retrieved 4 January 2016. Jump up ^ `` Sherlock Series 3 Ratings -- Series Average ''. Radio Times. 22 January 2014. Retrieved 31 January 2015. ^ Jump up to : `` Weekly Top 30 Programmes ''. Barb.co.uk. Retrieved 12 January 2014. ( No permanent link available. Search for relevant dates. ) ^ Jump up to : Porter, Rick ( 5 January 2017 ). `` ' Sherlock ' returns slightly lower on PBS ''. TVByTheNumbers. Retrieved 17 January 2017. Jump up ^ Office, BBC Press ( 24 January 2017 ). `` # Sherlock consolidated series average of 10 million viewerspic.twitter.com/bLnkFRTzuz ''. Jump up ^ Oglethorpe, Tim ( 23 July 2010 ). `` Sherlock 's got sexy ! With nicotine papers instead of a pipe and taxis replacing hansom cabs, the new TV Holmes is a very 21st century hero ''. Daily Mail. Retrieved 4 May 2012. ^ Jump up to : `` Steven Moffat : `` Cos people have asked : tonight 's Sherlock ( '' The Blind Banker `` ) is loosely based on The Dancing Men. '' ``. twitter.com. Retrieved 6 December 2010. Jump up ^ The DVD audio commentary for `` The Great Game '' confirms that The Bruce - Partington Programme derives from The Adventure of the Bruce - Partington Plans, a Conan Doyle short story about a man who was found dead on the District Railway. ^ Jump up to : Kissell, Rick ( 20 January 2014 ). `` ' Sherlock ' Sees Rising Ratings in Return to PBS on Sunday ''. Variety. Retrieved 4 January 2016. Jump up ^ `` Sherlock Mini-Episode : Many Happy Returns -- Sherlock Series 3 Prequel -- BBC One ''. BBC Youtube channel. 24 December 2013. Jump up ^ `` Sherlock, Series 3, Sherlock Mini Episode -- Many Happy Returns ''. BBC One. 2015. Retrieved 30 May 2015. Jump up ^ `` Sherlock : Many Happy Returns ( S ) ''. Film Affinity. Retrieved 19 December 2016. Jump up ^ `` Sherlock series three : new details revealed ''. The Daily Telegraph. 3 May 2012. Retrieved 12 May 2012. Jump up ^ Hibberd, James ( 27 January 2014 ). `` ' Downton Abbey ' ratings still huge, yet ' Sherlock ' drops ''. Entertainment Weekly. Retrieved 4 January 2016. Jump up ^ Hibberd, James ( 3 February 2014 ). `` Weekend ratings : ' Downton, ' ' Sherlock, ' ' Black Sails ' ''. Entertainment Weekly. Retrieved 17 January 2017. Jump up ^ Jones, Paul ( 24 October 2015 ). `` What does the title The Abominable Bride tell us about the Sherlock special ? ''. Radio Times. Retrieved 26 October 2015. Jump up ^ Conan Doyle, Arthur. `` The Adventures of Sherlock Holmes '' ( PDF ). The Adventures of Sherlock Holmes. Retrieved 25 January 2017. ^ Jump up to : Mellor, Louisa ; Leane, Rob ( 25 September 2016 ). `` Sherlock series 4 : first 2 episode titles revealed ''. Den of Geek. Retrieved 25 September 2016. Jump up ^ Hibberd, James ( 5 January 2017 ). `` Sherlock ratings dip from last season ''. Entertainment Weekly. Retrieved 5 January 2017. Jump up ^ Jones, Paul ( 12 December 2016 ). `` Sherlock series 4 episode 3 : what happens in finale The Final Problem ? Will Mary die ? Will Sherlock end ? ''. RadioTimes. Retrieved 13 December 2016. Jump up ^ Jones, Paul ( 15 January 2017 ). `` What is Sherlock 's Musgrave Ritual ? ''. Radio Times. Retrieved 15 January 2017. External links Sherlock on IMDb Sherlock at the BBC Sherlock Episodes Series 1 `` A Study in Pink '' `` The Blind Banker '' `` The Great Game '' Series 2 `` A Scandal in Belgravia '' `` The Hounds of Baskerville '' `` The Reichenbach Fall '' Series 3 `` The Empty Hearse '' `` The Sign of Three '' `` His Last Vow '' Special `` The Abominable Bride '' Series 4 `` The Six Thatchers '' `` The Lying Detective '' `` The Final Problem '' Related Characters Awards and nominations Screen adaptations of Sherlock Holmes Silent films Sherlock Holmes Baffled ( 1900 ) Adventures of Sherlock Holmes ; or, Held for Ransom ( 1905 ) Sherlock Holmes in the Great Murder Mystery ( 1908 ) Arsène Lupin contra Sherlock Holmes ( 1910 ) Der Hund von Baskerville ( 1914 ) Detektiv Braun ( 1914 ) A Study in Scarlet ( 1914 British film ) A Study in Scarlet ( 1914 US film ) The Valley of Fear ( 1916 ) Sherlock Holmes ( 1916 ) Sherlock Holmes ( 1922 ) The Hound of the Baskervilles ( 1929 ) Stoll series The Dying Detective ( 1921 ) The Devil 's Foot ( 1921 ) The Man with the Twisted Lip ( 1921 ) The Hound of the Baskervilles ( 1921 ) The Sign of Four ( 1923 ) Wontner series The Sleeping Cardinal ( 1931 ) The Missing Rembrandt ( 1932, lost ) The Sign of Four ( 1932 ) The Triumph of Sherlock Holmes ( 1935 ) Silver Blaze ( 1937 ) Rathbone - Bruce series The Hound of the Baskervilles ( 1939 ) The Adventures of Sherlock Holmes ( 1939 ) Voice of Terror ( 1942 ) Secret Weapon ( 1942 ) Sherlock Holmes in Washington ( 1943 ) Sherlock Holmes Faces Death ( 1943 ) The Spider Woman ( 1944 ) The Scarlet Claw ( 1944 ) The Pearl of Death ( 1944 ) The House of Fear ( 1945 ) The Woman in Green ( 1945 ) Pursuit to Algiers ( 1945 ) Terror by Night ( 1946 ) Dressed to Kill ( 1946 ) Maslennikov series Sherlock Holmes and Dr. Watson ( 1979 ) The Adventures of Sherlock Holmes and Dr. Watson ( 1980 ) The Hound of the Baskervilles ( 1981 ) The Treasures of Agra ( 1983 ) The Twentieth Century Approaches ( 1986 ) By actor Clive Brook The Return of Sherlock Holmes ( 1929 ) Sherlock Holmes ( 1932 ) Peter Cushing The Hound of the Baskervilles ( 1959 ) The Masks of Death ( 1984 ) Christopher Lee The Deadly Necklace ( 1962 ) The Leading Lady ( 1991 ) Incident at Victoria Falls ( 1991 ) Robert Downey Jr. Sherlock Holmes ( 2009 ) A Game of Shadows ( 2011 ) Television films Christopher Plummer Silver Blaze ( 1977 ) Murder by Decree ( 1979 ) Ian Richardson The Sign of Four ( 1983 ) The Hound of the Baskervilles ( 1983 ) Murder Rooms ( 2000 ) Matt Frewer The Hound of the Baskervilles ( 2000 ) The Sign of Four ( 2001 ) The Case of the Whitechapel Vampire ( 2002 ) The Royal Scandal ( 2003 ) Ian Hart ( as Watson ) The Hound of the Baskervilles ( 2002 ) The Case of the Silk Stocking ( 2004 ) Other films The Speckled Band ( 1931 ) The Hound of the Baskervilles ( 1932 ) A Study in Scarlet ( 1933 ) The Hound of the Baskervilles ( 1937 ) A Study in Terror ( 1965 ) The Private Life of Sherlock Holmes ( 1970 ) The Hound of the Baskervilles ( 1972 ) Sherlock Holmes in New York ( 1976 ) The Seven - Per - Cent Solution ( 1976 ) The Hound of the Baskervilles ( 1982 ) Sherlock Holmes and the Baskerville Curse ( 1983 ) The Case of Marcel Duchamp ( 1984 ) Young Sherlock Holmes ( 1985 ) The Return of Sherlock Holmes ( 1987 ) Hands of a Murderer ( 1990 ) The Crucifer of Blood ( 1991 ) 1994 Baker Street : Sherlock Holmes Returns ( 1993 ) The Hound of London ( 1993 ) Sherlock : Case of Evil ( 2002 ) Sherlock Holmes and the Baker Street Irregulars ( 2007 ) Sherlock Holmes ( 2010 ) Holmes & Watson. Madrid Days ( 2012 ) Mr. Holmes ( 2015 ) Comedies, pastiches, and parodies The Mystery of the Leaping Fish ( 1916 ) The Limejuice Mystery or Who Spat in Grandfather 's Porridge ? ( 1930 ) Lelíček ve službách Sherlocka Holmese ( 1932 ) The Man Who Was Sherlock Holmes ( 1937 ) The Case of the Screaming Bishop ( 1944 ) Deduce, You Say ! ( 1956 ) They Might Be Giants ( 1971 ) The Adventure of Sherlock Holmes ' Smarter Brother ( 1975 ) The Return of the World 's Greatest Detective ( 1976 ) Sherlock Pink ( 1976 ) The Strange Case of the End of Civilization as We Know It ( 1977 ) The Hound of the Baskervilles ( 1978 ) The Private Eyes ( 1980 ) The Great Mouse Detective ( 1986 ) Without a Clue ( 1988 ) The Adventures of Shirley Holmes ( 1997 ) Zero Effect ( 1998 ) A Samba for Sherlock ( 2001 ) Sheerluck Holmes and the Golden Ruler ( 2006 ) Aria the Scarlet Ammo ( 2008 ) Tantei Opera Milky Holmes ( 2009 ) Tom and Jerry Meet Sherlock Holmes ( 2010 ) The Empire of Corpses ( 2015 ) Sherlock Gnomes ( 2018 ) Holmes and Watson ( 2018 ) Television series Sherlock Holmes ( 1951 ) Sherlock Holmes ( 1954 ) Sherlock Holmes ( 1965 -- 68 ) Sherlock Holmes ( 1967 -- 68 ) Sherlock Holmes ( 1968 ) Sherlock Holmes and Doctor Watson ( 1979 -- 80 ) Young Sherlock : The Mystery of the Manor House ( 1982 ) The Baker Street Boys ( 1983 ) Sherlock Hound ( 1984 -- 85 ) Sherlock Holmes ( 1984 -- 94 ) episodes Sherlock Holmes in the 22nd Century ( 1999 -- 2001 ) Murder Rooms : The Dark Beginnings of Sherlock Holmes ( 2000 ) Sherlock ( 2010 -- present ) Sherlock Yack ( 2011 -- present ) Elementary ( 2012 -- present ) Sherlock Holmes ( 2013 ) Sherlock Holmes ( 2014 ) others articles List of Sherlock Holmes cast members, Minor Sherlock Holmes characters Retrieved from `` https://en.wikipedia.org/w/index.php?title=List_of_Sherlock_episodes&oldid=810268184 '' Categories : BBC - related lists Lists of British crime drama television series episodes Lists of British mystery television series episodes Sherlock ( TV series ) episodes Sherlock Holmes lists Hidden categories : Use dmy dates from January 2016 Articles containing potentially dated statements from January 2017 All articles containing potentially dated statements Wikipedia articles with plot summary needing attention from April 2016 All Wikipedia articles with plot summary needing attention Talk Contents About Wikipedia Čeština فارسی Français Italiano ქართული Latviešu Português Română Русский Türkçe Українська 中文 Edit links This page was last edited on 14 November 2017, at 07 : 01. 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Question: how many episodes are in sherlock holmes season 1
Answer: three