

8.0Season 1 • Episode 6
LatestSeries finale: Claire's boys are locked in mini caskets and before she can save them, a nurse injects her with a sedative. In a big country house, Peter descends in an old-fashioned lift to a dusty, forgotten gentlemen's club. There are six floors hewn deep into the ancient building's foundations - hell is on the lowest floor. They are hiding a secret; the building needs to be a fortress - and a trap for a man who can rip out a lion's throat.
Tom Jackman is learning to cope with his alter ego, the dark and mysterious Hyde, who threatens his life and family. They also have to live in the same body while on the run from a mysterious organization that is hunting them.
Acting
Nesbitt's dual performance — two complete humans in one frame.
Writing
Moffat's debut showrunner flex: witty, cruel, surgically precise.
Direction
Mirror scenes and tight spaces that trap you with him.
Trivia, insights & behind the scenes
Nesbitt developed distinct physicalities: Jackman holds his breath, Hyde never blinks. The crew could tell which was shooting by his coffee order—black for Hyde, milky for Tom.
Moffat wrote this between Doctor Who seasons as a deliberate anti-hero pivot, then cannibalized its 'domestic monster' DNA for Sherlock's Moriarty. Mrs. Jackman's actress? His then-wife.