The Final Problem (Sherlock)
| "The Final Problem" | |
|---|---|
| Sherlock episode | |
| Episode no. |
Series 4 Episode 3 |
| Directed by | Benjamin Caron |
| Written by |
Steven Moffat Mark Gatiss |
| Produced by | Sue Vertue |
| Featured music |
David Arnold Michael Price |
| Cinematography by | David Luther |
| Editing by | Yan Miles |
| Original air date | 15 January 2017 |
| Running time | 89 minutes |
| Guest appearance(s) | |
|
|
"The Final Problem" is the third episode of the fourth series of the British television series Sherlock and the thirteenth episode overall. The episode was first broadcast on BBC One, PBS, Channel One and 1+1 on 15 January 2017.
A girl wakes up on an aeroplane and finds everybody asleep. She picks up a mobile phone and hears Jim Moriarty announce "Welcome to the Final Problem".
Mycroft Holmes is at home watching a vintage film, which stops with the words “I’M BACK”, when a clown with a sword intrudes. Mycroft tries to escape, but Sherlock appears and reveals that he and John Watson staged the attack to prove that his sister, Eurus, exists.
On Baker Street, Mycroft reveals that their parents sent Eurus to a mental institution after she burned down their home. An adult Mycroft then sent her to a maximum-security facility, Sherrinford. He dismisses the idea that she has escaped, but next day at Baker Street when they were discussing about Eurus, a quadcopter from Eurus flies into the flat carrying an explosive. John, Sherlock, and Mycroft are forced to flee as the bomb detonates.
Later, John and Sherlock hijack a boat to travel to Sherrinford and carry out a diversion plan so Sherlock can reach Eurus' cell. Mycroft and John corner the prison governor, discovering that Eurus has taken control of the prison by influencing the people she talks to. Meanwhile, Sherlock talks to Eurus, but she attacks him and knocks him unconscious. The guards lock Sherlock, John, Mycroft, and the governor together in a cell.
Mycroft reveals that five years ago, he granted Eurus five unsupervised minutes with Moriarty as a Christmas present. In the present day, Eurus leads the captives in a series of psychological ordeals, forcing Sherlock into sinister games to save lives while videos of Moriarty taunt him. Although Eurus prods Sherlock onward with the prospect of saving the girl on the aeroplane, he eventually stops the games by threatening to shoot himself when she orders him to shoot either John or Mycroft. Frustrated, Eurus uses tranquilliser darts on the three of them.
Sherlock wakes up near his family's old house. He speaks to the girl in the aeroplane to try to guide her in landing safely. John wakes up at the bottom of a well. When he finds human bones there, Sherlock realizes that what he thought was his dog Redbeard was in fact his best friend, Victor Trevor. Eurus threw him into the same well and left him for dead because she felt left out of Sherlock's attention as a child. Sherlock then deciphers the real meaning of the song Eurus originally taunted him with when Redbeard went missing, which reveals that she wants him to find her. Sherlock discovers that the girl in the plane is actually Eurus's mental metaphor and that the game has been a cry for help. With Eurus's puzzle solved, Sherlock is able to send her back to Sherrinford after rescuing John.
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