Top Billed Cast
Peter O'Toole
Sherlock Holmes (voice)
Ron Haddrick
Dr. Mortimer (voice)
Earle Cross
Dr. Watson (voice)
Helen Morse
Beryl Stapleton (voice)
Robin Stewart
Jack Stapleton (voice)
Moya O'Sullivan
Mrs. Barrymore (voice)
Phillip Hinton
(voice)