Basil Rathbone

Sherlock Holmes

Nigel Bruce

Dr. John Watson

Dennis Hoey

Inspector Lestrade

Evelyn Ankers

Naomi Drake

Miles Mander

Giles Conover

Ian Wolfe

Amos Hodder

Charles Francis

Francis Digby, curator

Holmes Herbert

James Goodram, courier

Richard Aherne

Museum Guard Bates