杰克·华纳
Jack Warner
饰：Det. Insp. Fred Fellows
罗纳德·刘易斯
Ronald Lewis
饰：Det. Sgt. Jim Wilks
Yolande Donlan
饰：Jean Sherman
迈克尔·古德利菲
Michael Goodliffe
饰：Clyde Burchard
约翰·勒·梅苏里尔
John Le Mesurier
饰：Mr. Simpson
莫伊拉·雷德蒙德
Moira Redmond
饰：Joan Simpson
Christine Bocca
Christine Bocca
饰：Mrs. Simpson
布莱恩·奥尔顿
Brian Oulton
饰：Frank Restlin
雷·巴雷特
Ray Barrett
饰：Sgt. Gorman
Norman Chappell
Norman Chappell
饰：Andy Roach
约翰·巴伦
John Barron
饰：Ray Tenby,'John Campbell'
Joan Newell
饰：Mrs. Banks
Peter Ashmore
饰：Mr. Bunnell (uncredited)
蒂莫西·贝特森
Timothy Bateson
饰：Porter (uncredited)
杰弗里·拜尔顿
Geoffrey Bayldon
饰：Constable at Murder Scene (uncredited)
Basil Beale
Basil Beale
饰：Police Clerk (uncredited)
卡尔·伯纳德
Carl Bernard
饰：News Vendor (uncredited)
Harry Brunning
Harry Brunning
饰：Luggage Clerk (uncredited)
Gerald Campion
Gerald Campion
饰：Glazier (uncredited)
克利福德·厄尔
Clifford Earl
饰：2nd Press Man (uncredited)
Fred Ferris
饰：Information Sergeant (uncredited)
Geoffrey Frederick
饰：Sgt. Unwin (uncredited)
约翰·霍斯利
John Horsley
饰：Supt. Ramsey (uncredited)
Charles Houston
Charles Houston
饰：Garage Foreman (uncredited)
Charles Lamb
饰：Mr. Peck (uncredited)
雷金纳德·马什
Reginald Marsh
饰：Hilders (uncredited)
Michael McStay
Michael McStay
饰：Police Operator (uncredited)
Robert Moore
饰：Dr. MacFarlane (uncredited)
Mike Moyer
饰：Driver PC Harris (uncredited)
Graham Payn
饰：Mr. Blake (uncredited)
Lisa Peake
Lisa Peake
饰：Girl Cyclist (uncredited)
Robert Raglan
Robert Raglan
饰：Chief Constable (uncredited)
Geoffrey Russell
Geoffrey Russell
饰：Chief Superintendent (uncredited)
Julie Samuel
饰：Lois (uncredited)
Graham Skidmore
Graham Skidmore
饰：1st Press Man (uncredited)
Barry Steele
饰：Evening Argus Reporter (uncredited)
玛丽安·斯通
Marianne Stone
饰：Secretary (uncredited)
凯文·史东尼
Kevin Stoney
饰：Mr. Gardner (uncredited)
Bruce Wightman
Bruce Wightman
饰：3rd Press Man (uncredited)
Joseph Wise
Joseph Wise
饰：Plainclothes Officer (uncredited)
Terence Woodfield
Terence Woodfield
饰：Boy Cyclist (uncredited)