Sherlock Holmes
Dr. Watson
George Stapleton
Dr. John Mortimer
Laura Frankland
Beryl Stapleton
Sir Henry Baskerville
Arthur Frankland
Inspector Lestrade
Barrymore
Eliza Barrymore
Messenger
Constable
Manager
Eel Monger
Billy Cartwight
Higgins
Mrs. Mortimer (as Karen Kondan)
Maid Servant
Peasant Girl
Chestnut Salesman
Porter
Train Conductor (uncredited)
Paperboy (uncredited)
Seldon (uncredited)