- Sydney Tafler - Stone
- Peter Burton - Creasey
- George Rose - Slob
- Arthur Rigby - Detective Inspector at Chester
- Ralph Truman - Colonel Blenkinsop
- Ian Bannen - The Young Workman - Stanley James
- Maureen Davis - The Young Workman's Wife - Mrs. James
- John Warwick - Detective Inspector at Shipping Office
- Joss Ambler - Cashier at Shipping Office
- Barry Keegan - Detective Constable in Hospital Ward
- Alec McCowen - House Surgeon
- Harry Locke - Secondhand Dealer
- Nicholas Parsons - Police Constable Bates
- Warwick Ashton - Newspaper Circulation Manager
- Ursula Howells - Mrs. Elliot / Mrs. Gilson
- David Davies - Welsh Police Constable
- Julie Milton - Welsh Newsagent's Daughter
- Meredith Edwards - Mr. Thomas
- Harold Goodwin - Official at Somerset House
- John Welsh - House Agent at Shepperton
- Gillian Webb - Housewife at Shepperton
- Maureen Delaney - Mrs. Stevens, the daily help
- Jameson Clark - Detective Superintendent Ogilvie
- William Mervyn - Manager of Festival Hall
- Vincent Ball - P.C. at Hospital (uncredited)
- Richard Davies - Detective (uncredited)
- Frazer Hines - Urchin (uncredited)
- Stratford Johns - Constable (uncredited)
- David Lodge - Detective at Car Lot (uncredited)
- Guy Standeven - Detective (uncredited)
- Frederick Treves - Detective tailing Creasey (uncredited)
- Peter Welch - CID Man (uncredited)
- Martin Wyldeck - Officer in Criminal Records Department (uncredited)
-
Fred C. Brannon
Capítulo disponible en las siguientes plataformas:
