Elenco - The Masks of Death
Peter Cushing
Sherlock HolmesJohn Mills
Dr. John H. Watson / NarratorAnne Baxter
Irene Adler / Mrs. NortonRay Milland
Home SecretaryAnton Diffring
Graf Udo Von FelseckGordon Jackson
Inspector Alec MacDonaldMarcus Gilbert
Anton Von FelseckSusan Penhaligon
Miss DerwentJenny Laird
Mrs. HudsonRussell Hunter
Alfred CoombsJames Cossins
Frederick BainsEric Dodson
Lord ClaremontGeorgina Coombs
Lady ClaremontJames Head
Chauffeur