- George Sanders
- Simon Templar aka The Saint / 'Boss' Duke Bates
- Helene Reynolds
- Anne Bitts
- Jonathan Hale
- Inspector Henry Fernack
- Bela Lugosi
- The Partner
- Donald MacBride
- John Bohlen
- John F. Hamilton
- Limpy
- Thomas W. Ross
- Professor Horatio Bitts
- Elliott Sullivan
- Monk
- Stanley Blystone
- Detective Sadler
- Ralph Dunn
- Police Sergeant
- Byron Foulger
- Ephraim Byrd
- Billy Franey
- Street Shooting Witness
- Edward Gargan
- Police Sergeant
- William Haade
- Helm Van Roon aka 'The Dutchman'
- Donald Kerr
- Card Player
- Pat McKee
- Card Player
- Lal Chand Mehra
- Cairo Express Office Clerk
- Walter Miller
- Mac - Bartender
- Pat O'Malley
- Express Man
- Jack O'Shea
- Spectator on Street
- Lee Phelps
- Police Sergeant Outside Bohlen's Office
- Fred Rapport
- Jeweler
- Sammy Stein
- Policeman
