Mark Gatiss, who co-created "Sherlock" and plays Mycroft Holmes, discusses the show with Benedict Cumberbatch, Martin Freeman, and others in the cast.
Director: Nathan Landeg
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Martin Freeman
Himself
Rupert Graves
Mark Gatiss
Benedict Cumberbatch
Steven Moffat
Una Stubbs
Herself
Nathan Landeg
Director
Mark Gatiss: A Study in Sherlock