Episode

Part 4

Cast
Tom Baker as Sherlock Holmes
Terence Rigby as Dr. John H. Watson
Nicholas Woodeson as Sir Henry Baskerville
Hubert Rees as Insp. G. Lestrade
Caroline John as Laura Lyons
Will Knightley as Dr. James Mortimer
Michael Goldie as Selden
Kay Adshead as Beryl Stapleton
Christopher Ravenscroft as Jack Stapleton