Episode

The Hounds of Baskerville

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Cast
Benedict Cumberbatch as Sherlock Holmes
Martin Freeman as Dr. John H. Watson
Simon Paisley Day as Maj. Barrymore
Kevin Trainor as Billy
Clive Mantle as Dr. Frankland
Mark Gatiss as Mycroft Holmes
Una Stubbs as Mrs. Hudson
Russell Tovey as Henry Knight
Rupert Graves as DI Greg Lestrade
Andrew Scott as Jim Moriarty
Sasha Behar as Dr. Mortimer
Amelia Bullmore as Dr. Stapleton
Sam Jones as Young Henry
Stephen Wight as Fletcher
Gordon Kennedy as Gary
Rosalind Knight as Grace
Will Sharpe as Cpl. Lyons
Chipo Chung as Presenter
Simon Blood DeVay as Scientist