cast
- Margaret Lockwood
- Helene Andoine
- Hugh Sinclair
- Inspector Calas
- James Mason
- Andre Laurent
- Raymond Lovell
- Prof. Winkler
- Enid Stamp Taylor
- Dany
- Hartley Power
- Gordon
- Jane Carr
- Delia
- Rodney Ackland
- Winkler's Assistant
- Edana Romney
- Winkler's Assistant
- Elisabeth Welch
- Singer
- Olga Lindo
- Mlle. Loureau
- Muriel George
- Mme. Bretonnet
- George Merritt
- Bourdille
- Philip Leaver
- Dodo
- Derek Blomfield
- Gerard
crew
- Brian Desmond Hurst
- Director
- Josef Somlo
- Producer
- Jacques Companeez
- Screenwriter
- Marcel Achard
- Screen Story
- R. Juttke
- Screenwriter
- Roy Carter
- Screenwriter
- W. McLeod
- Cinematographer
- Alan Jaggs
- Editor
