Afterward, he invites the victims to choose one, promising he will swallow the other - and he threatens to shoot them if they refuse. Later, he pulls out two bottles containing an identical pill: one is harmless, the other is poison. The cabbie challenges Holmes to solve his puzzle. Outside, the cabbie confesses to the murders but proclaims he merely speaks to his victims, and they kill themselves. Hudson tells Holmes a taxi is waiting for him. At the same time, Watson finds the signal is coming from 221B Baker Street Mrs. Holmes presumes 'Rachel' was Wilson's e-mail password, and the victim planted her phone on the killer so GPS could trace him. While waiting at a local restaurant, Holmes notices a taxi and they outpace it on foot with shortcuts.

When Watson returns to Baker Street, Holmes asks him to text Wilson's still-missing phone, hoping the murderer will make a move. He also tells Watson that he misses the war, not suffering from post-traumatic stress disorder as his therapist believes. The man offers him money to spy on Holmes, but Watson refuses. Meanwhile, after a phone call, Watson is compelled to meet a man who claims to be Holmes's 'arch-enemy'. The police have not found a carry-on with the body, but Holmes discovers it abandoned nearby. Holmes deduces she is from out of town and therefore had a suitcase. She managed to claw the word 'Rache' into the floor, and Sherlock reckons the victim died before completing the name 'Rachel', the name of her deceased daughter. Holmes looks at the latest crime scene: the body of Jennifer Wilson, who was dressed in pink. The police, led by Detective Inspector Lestrade, have been baffled by a series of deaths, described as 'serial suicides'. John Watson, an army doctor injured in Afghanistan, meets Sherlock Holmes, who is looking for a flatmate to share a flat at 221B Baker Street, owned by landlady Mrs. The British Board of Film Classification has rated the pilot as a 12 certificate (not suitable for children under 12) for video and online exhibition, and it is included as an additional feature on the DVD released on 30 August 2010. The story was refilmed, this time directed by Paul McGuigan.

However, the BBC decided not to transmit the pilot, but instead commissioned a series of three 90-minute episodes. It was originally filmed as a 60-minute pilot for Sherlock, directed by Coky Giedroyc.

The episode was written by Steven Moffat, who co-created the series. It is loosely based upon the first Sherlock Holmes novel, A Study in Scarlet. It introduces the main characters and resolves a murder mystery. ' A Study in Pink' is the first episode of the television series Sherlock and first broadcast on BBC One and BBC HD on 25 July 2010.

Sherlock unaired pilot torrent