The Creeping Man

Episode:  The Creeping Man

Bit of Trivia:  Edward Hardwicke (Dr. Watson) is the son of renowned British actor Sir Cedric Hardwicke, who had a long a distinguished career on both sides of the Atlantic; including several turns in later entries in classic Universal horror franchises (The Ghost of Frankenstein, The Invisible Agent) and had several turns in Hitchcock films as well.

Jeremy Brett as Holmes (right) & Edward Hardwicke as Dr. Watson (left)