Hugh Sinclair
Simon Templar
Sally Gray
Mary Langdon
Arthur Macrae
Monty Hayward
Cecil Parker
Rudolph Hauser
Leueen MacGrath
Valerie
John Warwick
Gregory
Manning Whiley
Marko
Felix Aylmer
Leighton
Ivor Barnard
Emil
Gordon McLeod
Inspector Claud Teal
Roddy Hughes
Valet (uncredited)
Eric Clavering
Reporter at door (uncredited)
Noel Dainton
Commissaire (uncredited)