Prof. Winkler
Raymond Lovell
Helene Ardouin
Margaret Lockwood
Inspector Calas
Hugh Sinclair
Andre Laurent
James Mason
Dany
Enid Stamp-Taylor
Winker's Assistant
Rodney Ackland
Gordon
Hartley Power
Delia
Jane Carr*
Winkler's Assistant
Edana Romney
Singer
Elisabeth Welch
Mlle. Loureau
Olga Lindo
Mme. Bretonnet
Muriel George
Bourdille
George Merritt
Josette
Judy Gray
Dodo
Philip Leaver
Gerard
Derek Blomfield