Kadro (24)
Terence MorganInspector Ralph Brown
Yolande DonlanJill WilsonAnthony OliverInspector Newcombe
André MorellRobert Isaac Pitt
Reginald BeckwithHarold
Ursula HowellsAntonia PittGuido LorrainePietr Revski
Basil DignamWing Commander RiddleRaymond RollettSir Robert Rosper
Fred JohnsonProfessor Robinson-Heston
Arnold MarléKarl Kopek
Mark DignamPrison Governor
John HorsleyAssistant Commissioner
Barry LoweEric ColterDiana LambertYoung WomanPetra DaviesPitt's Maid (uncredited)Brown DerbyPolice Sergeant (uncredited)Michael GodfreyChertwell Security Guard (uncredited)Arthur LovegroveNick (uncredited)Louis MattoWaiter (uncredited)Guy MillsBrown's Driver (uncredited)Stuart MitchellHead Waiter (uncredited)
Jim BradyNick's Thug (uncredited)Cyril RenisonDetective Sergeant Enders (uncredited)