Inspector Ralph Brown
Terence Morgan
Jill Wilson
Yolande Donlan
Karl Kopek
Arnold Marlé
Prison Governor
Mark Dignam
Assistant Commissioner
John Horsley
Eric Colter
Barry Lowe
Young Woman
Diana Lambert
Pitt's Maid (uncredited)
Petra Davies
Police Sergeant (uncredited)
Brown Derby
Chertwell Security Guard (uncredited)
Michael Godfrey
Nick (uncredited)
Arthur Lovegrove
Waiter (uncredited)
Louis Matto
Inspector Newcombe
Anthony Oliver
Brown's Driver (uncredited)
Guy Mills
Head Waiter (uncredited)
Stuart Mitchell
Nick's Thug (uncredited)
Jim Brady
Detective Sergeant Enders (uncredited)
Cyril Renison
Robert Isaac Pitt
André Morell
Harold
Reginald Beckwith
Antonia Pitt
Ursula Howells
Pietr Revski
Guido Lorraine
Wing Commander Riddle
Basil Dignam
Sir Robert Rosper
Raymond Rollett
Professor Robinson-Heston
Fred Johnson
Screenplay
Val Guest
Director
Val Valentine
Novel
Leonard Mosley
Camera Operator
Bernard Lewis