Mark Gatiss, who co-created "Sherlock" and plays Mycroft Holmes, discusses the show with Benedict Cumberbatch, Martin Freeman, and others in the cast.
Acting
Gatiss's genuine awe watching his own cast — he's still a fanboy.
Production
Rare glimpse at the 221B set details you definitely missed.
Director
Nathan Landeg
Trivia, insights & behind the scenes
Gatiss has played Mycroft in more Sherlock adaptations than any actor in history — including audio dramas and stage.
This doc was shot during the 'Abominable Bride' gap year, when fans were spiraling over the Moriarty cliffhanger.
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