Inspector Ralph Brown
Jill Wilson
Inspector Newcombe
Robert Isaac Pitt
Harold
Antonia Pitt
Pietr Revski
Wing Commander Riddle
Sir Robert Rosper
Professor Robinson-Heston
Karl Kopek
Prison Governor
Assistant Commissioner
Eric Colter
Young Woman
Pitt's Maid (uncredited)
Police Sergeant (uncredited)
Chertwell Security Guard (uncredited)
Nick (uncredited)
Waiter (uncredited)
Brown's Driver (uncredited)
Head Waiter (uncredited)
Nick's Thug (uncredited)
Detective Sergeant Enders (uncredited)