Peter Cushing

Sherlock Holmes

John Mills

Dr. John H. Watson / Narrator

Anne Baxter

Irene Adler / Mrs. Norton

Ray Milland

Home Secretary

Anton Diffring

Graf Udo Von Felseck

Gordon Jackson

Inspector Alec MacDonald

Marcus Gilbert

Anton Von Felseck

Susan Penhaligon

Miss Derwent

Jenny Laird

Mrs. Hudson