Cast
- Sydney Greenstreet as Supt. George Edward Grodman
- Peter Lorre as Victor Emmric
- Joan Lorring as Lottie Rawson
- George Coulouris as Supt. John R. Buckley
- Rosalind Ivan as Mrs. Vicky Benson
- Paul Cavanagh as Clive Russell
- Arthur Shields as Rev. Holbrook
- Morton Lowry as Arthur Kendall
- Holmes Herbert as Sir William Dawson
- Art Foster as PC Warren
Crew
- Don Siegel · Director
- Peter Milne · Writer
- Israel Zangwill · Writer
- William Jacobs · Producer
- Friedrich Hollaender · Composer
- Ernest Haller · Cinematographer
- Thomas Reilly · Editor