杰克·霍金斯

Jack Hawkins

饰：Supt Tom Halliday

约翰·斯特拉顿

John Stratton

饰：Sgt Ward

多萝西·艾莉森

Dorothy Alison

饰：Mary Halliday

山姆·基德

Sam Kydd

饰：Police Operator (opening shots)

格林·休斯顿

Glyn Houston

饰：Sgt

理查德·利奇

Richard Leech

饰：Gilson, the burglar

Newton Blick

饰：Detective Commander Harris

格佛雷·肯

Geoffrey Keen

饰：Chief Superintendant Malcolm

西德尼·塔夫勒

Sydney Tafler

饰：Mr. Stone

彼得·伯顿

Peter Burton

饰：Mr. Creasey

George Rose

饰：Slob, the informer

Arthur Rigby

饰：Detective-Inspector at Chester

拉尔夫·杜鲁门

Ralph Truman

饰：Colonel Blenkinsop

伊安·邦纳

Ian Bannen

饰：Workman, Hit and Run Victim.

Maureen Davis

Maureen Davis

饰：Workman's Wife

John Warwick

饰：Detective at Shipping Office

Joss Ambler

饰：Shipping office cashier

Barry Keegan

饰：Detective-Constable in Hospital Ward

亚历克·马克温

Alec McCowen

饰：Hospital Doctor

Harry Locke

饰：Junk Dealer

Nicholas Parsons

饰：Constable Bates

厄休拉·豪威尔斯

Ursula Howells

饰：Mrs. Elliott (Mrs. Gilson)

梅雷迪思·爱德华兹

Meredith Edwards

饰：Thomas, garage owner

约翰·威尔士

John Welsh

饰：Shepperton Real Estate Agent

莫琳·德莱尼

Maureen Delaney

饰：Mrs. Stevens, housecleaner

Jameson Clark

Jameson Clark

饰：Detective Ogilvie, fraud division

William Mervyn

饰：Manager of the Royal Festival Hall

斯特拉特福德·约翰斯

Stratford Johns

饰：Constable

文森特·鲍尔

Vincent Ball

饰：P.C. at Hospital. (uncredited)

David Davies

饰：P.C.in newsagent shop. (uncredited)

弗雷德·格里菲思

Fred Griffiths

饰：Barman. (uncredited)

大卫·洛奇

David Lodge

饰：Detective Car Lot. (uncredited)

约翰·保罗

John Paul

饰：Police Radio Operator (uncredited)

Frederick Treves

饰：Detective Tailing Creasey. (uncredited)

Peter Welch

Peter Welch

饰：CID Man (uncredited)

Michael Brooke

Michael Brooke

饰：Tony Halliday

Warwick Ashton

Warwick Ashton

饰：Newspaper Editor

Julie Milton

Julie Milton

饰：Welsh Newspaper Vendor

Gillian Webb

Gillian Webb

饰：Housewife

Richard Davies

Richard Davies

Harold Goodwin

Harold Goodwin

饰：Official at Somerset House