Guest-star file · Series 13
Mark Gatiss
as Rev. Giles Shawcross in The Sword of Guillaume
Sherlock · Doctor Who · The League of Gentlemen
The Midsomer part
Who did Mark Gatiss play?
Gatiss plays the Reverend Giles Shawcross in The Sword of Guillaume, the case that takes Barnaby's investigation to Brighton. His role adds a familiar writer-performer's face to the episode's unusually broad setting.
This overview explains the character's place in the story without identifying the killer or final outcome.
Open the Series 13 case file →Acting career
Performer biography.
Mark Gatiss co-created The League of Gentlemen and later co-created Sherlock with Steven Moffat, also playing Mycroft Holmes. He has written for and acted in Doctor Who.
His work spans comedy, horror, detective fiction and theatre, including the television adaptation Dracula. A lifelong enthusiast for genre storytelling, he has worked on both sides of the camera.
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