Cast
Joe Dennison
Marline Miller
Inspector Hector «Mac» McClaren
Thompson Blake
Yeo
Hunziger
Sgt. SmithDr. Eric Miller 
Sir Stafford BeachCommander Gilles 
Castle
HoxieLascelles Policeman, not listed in credits Policeman, not listed in credits Police Chemist, not listed in credits Martin - Police Informer, not listed in credits Mickey Sweeney, not listed in credits Diamond Laboratory Technician, not listed in credits P.C. with Taxi Driver, not listed in credits Restaurant Patron, not listed in credits 
Dr. Cully, not listed in credits
First Fox & Hounds Detective, not listed in creditsPolice Sgt. Hunter, not listed in credits Radio Sergeant, not listed in credits 
Police Sgt. Graves - 3rd Fox & Hounds Detective, not listed in creditsаPaul Hawkins, not listed in credits Taxi Driver, not listed in credits 
Mr. Pritchard, not listed in credits
Police Informer, not listed in credits
Policeman, not listed in creditsSpringwell Police Sergeant, not listed in credits 
Policeman, not listed in creditsPolice Informer, not listed in credits First Fox & Hounds Driver, not listed in credits Blake's Manservant, not listed in credits Beach Patrol, not listed in credits 
Mrs. Sayer - Marline's Housekeeper, not listed in creditsа
Ballistics Technician, not listed in credits2nd Fox & Hounds Detective, not listed in credits 
Sam - Fingerprint Technician, not listed in credits
Sailor on Tomaszov, not listed in credits