Griffith Jones as Robert Ainsworth

Ursula Howells as Lucille Ainsworth

Honor Blackman as Sarah Hayward

Ewen Solon as Detective Inspector Marshall

Carl Bernard as Gilbert Morgan

Mary Jones as Nella Langford

Philip Gilbert as John Langford

John Van Eyssen as Clive Franklyn

Doris Yorke as Landlady

Harry Ross as Bernard Goodman

Robert Raikes as Detective Sgt. Berry

Gordon Phillott as Rigby

Vernon Smythe as Col. Jarvis

Gerda Larsen as Blondi

Barry Steele as Barman

Edwin Richfield as Porter

Philip Johns as Detective Sergeant (uncredited)

Joe Wadham as Police Driver (uncredited)