 George SandersSimon Templar | Simon Templar |
 Helene ReynoldsAnne Bitts | Anne Bitts |
 Jonathan HaleInspector Henry Fernack | Inspector Henry Fernack |
 Bela LugosiPartner | Partner |
 Donald MacBrideInspector John H. Bohlen | Inspector John H. Bohlen |
 John F. HamiltonLimpy | Limpy |
 Thomas W. RossProfessor Horatio T. Bitts | Professor Horatio T. Bitts |
 Elliott SullivanMonk 'Warren' | Monk 'Warren' |
 Stanley BlystoneDetective Sadler (uncredited) | Detective Sadler (uncredited) |
 Ralph DunnPolice Sergeant (uncredited) | Police Sergeant (uncredited) |
 Byron FoulgerEphraim Byrd (uncredited) | Ephraim Byrd (uncredited) |
 Billy FraneyStreet Shooting Witness (uncredited) | Street Shooting Witness (uncredited) |
 Edward GarganPolice Sergeant (uncredited) | Police Sergeant (uncredited) |
 William HaadeHelm Van Roon aka 'The Dutchman' (uncredited) | Helm Van Roon aka 'The Dutchman' (uncredited) |
 Donald KerrCard Player (uncredited) | Card Player (uncredited) |
| PPat McKeeCard Player (uncredited) | Card Player (uncredited) |
 Lal Chand MehraCairo Express Office Clerk (uncredited) | Cairo Express Office Clerk (uncredited) |
 Walter MillerMac (uncredited) | Mac (uncredited) |
 Pat O'MalleyExpress Man (uncredited) | Express Man (uncredited) |
 Jack O'SheaSpectator on Street (uncredited) | Spectator on Street (uncredited) |
 Lee PhelpsPolice Sergeant Outside Bohlen's Office (uncredited) | Police Sergeant Outside Bohlen's Office (uncredited) |
| FFred RapportJeweler (uncredited) | Jeweler (uncredited) |
 Sammy SteinPoliceman (uncredited) | Policeman (uncredited) |
