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)

Leslie Fenton