Sherlock Holmes
Basil Rathbone
Doctor Watson
Nigel Bruce
Jill Grandis
Hillary Brooke
Camberwell
Harry Cording
Smithson - Barham's Butler (uncredited)
Herbert Evans
Meade's Henchman (uncredited)
Fred Graham
BBC Radio Announcer (voice) (uncredited)
Gavin Muir
Voice of Terror (voice) (uncredited)
Edgar Barrier
Bar Patron (uncredited)
Bobby Hale
Kitty
Evelyn Ankers
Sir Evan Barham
Reginald Denny
R.F. Meade
Thomas Gomez
Sir Anthony Lloyd
Henry Daniell
General Jerome Lawford
Montagu Love
Admiral Sir John Fabian Prentiss
Olaf Hytten
Captain Roland Shore
Leyland Hodgson
Mrs. Hudson
Mary Gordon
Original Music Composer
Frank Skinner
Story
Arthur Conan Doyle
Director
John Rawlins
Art Direction
Jack Otterson
Set Decoration
Russell A. Gausman
Associate Producer
Howard Benedict
Sound Director
Bernard B. Brown
Costume Design
Vera West
Sound
Robert Pritchard
Screenplay
John Bright
Director of Photography
Elwood Bredell
Lynn Riggs
Editor
Russell F. Schoengarth