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