Episode A Motive for Murder Adaptation: Sherlock Holmes and Doctor Watson Episode: 1 Airdate: 1980 IMDb: A Motive for Murder (link not verified) Next: The Case of the Speckled Band Cast Geoffrey Whitehead as Sherlock Holmes Donald Pickering as Dr. John H. Watson Patrick Newell as Insp. G. Lestrade Janet Spencer-Turner as Andrea Julian Fellowes as Peter Clifford Norman Bird as Anthony Denham