詹姆斯·梅森

James Mason

饰：Cmdr. Max Easton

乔治·桑德斯

George Sanders

饰：Sir Charles Holland

维拉·迈尔斯

Vera Miles

饰：Virginia Killain

奥利弗·约翰斯顿

Oliver Johnston

饰：Minister

罗伯特·弗莱明

Robert Flemyng

饰：Larkin

William Kendall

饰：Tom

Duncan Lamont

饰：Special Branch Man

哈里·安德鲁斯

Harry Andrews

饰：Capt. Graham

彼得·巴克沃斯

Peter Barkworth

饰：Sub Lt. Brown

Rachel Gurney

饰：Clara Holland

马丁·史蒂芬斯

Martin Stephens

饰：Clare Holland's Son

查尔斯·卡森

Charles Carson

饰：Robert Holland

Junia Crawford

Junia Crawford

饰：Susan

Henry B. Longhurst

饰：Club Member (as Henry Longhurst)

Roger Maxwell

饰：Club Member

杰拉尔德·凯斯

Gerald Case

饰：Club Member

唐纳德·比塞特

Donald Bisset

饰：Club Member

德蒙·罗伯茨

Desmond Roberts

饰：Club Member

Rosemary Dorken

饰：WREN Officer

麦克唐纳·帕克

MacDonald Parke

饰：Jason Parrish (as Macdonald Parke)

Mavis Villiers

饰：Adele Parrish

欧内斯特·克拉克

Ernest Clark

饰：Cmdr. Bates

约翰·勒·梅苏里尔

John Le Mesurier

饰：Head of the Admiralty

瓦西里·迪格纳穆

Basil Dignam

饰：Officer (uncredited)

Gordon Harris

Gordon Harris

饰：2nd Special Branch Man (uncredited)

珀西·赫伯特

Percy Herbert

饰：(uncredited) (unconfirmed)

约翰·霍斯利

John Horsley

饰：1st Editor (uncredited)

Ronald Leigh-Hunt

饰：2nd Editor (uncredited)

理查德·马内尔

Richard Marner

饰：Russian Officer cornered by James Mason at Russian Embassey Duo

Dickie Owen

饰：Second Policeman (uncredited)

Waveney Lee

Waveney Lee

饰：Marcia Holland

Jimmy Lloyd

饰：演员 Actor/Actress

弗雷德里克·派珀

Frederick Piper

William Mervyn

饰：演员 Actor/Actress

芭芭拉·希克斯

Barbara Hicks