Melodia Fatal

Basil Rathbone

Sherlock Holmes

Nigel Bruce

Dr. John H. Watson

Patricia Morison

Mrs. Hilda Courtney

Frederick Worlock

Colonel Cavanaugh

Harry Cording

Hamid

Carl Harbord

Inspector Hopkins

Holmes Herbert

Ebenezer Crabtree

Edmund Breon

Julian 'Stinky' Emery