Jack Hawkins (Inspector George Gideon)
Dianne Foster (Joanna Delafield)
Anna Lee (Kate Gideon)
Anna Massey (Sally Gideon)
Cyril Cusack (Herbert "Birdie" Sparrow)
Andrew Ray (P.C. Simon Farnaby-Green)
Charles Maunsell (Walker)
Peter Godsell (Jimmy)
Miles Malleson (Judge at Old Bailey)
Billie Whitelaw (Christine)
John Warwick (Inspector Gillick)
Dervis Ward (Simmo)
Bart Allison (Policeman)
Stuart Saunders (Chancery Lane policeman)
David Aylmer (Manners)
Michael O'Duffy (Policeman)
Malcolm Ranson (Ronnie Gideon)
Susan Richmond (Aunt May)
Alan Rolfe (CID Man at Hospital)
Bryan Smith (White-Douglas)
Raymond Rollett (Uncle Dick)
Barry Keegan (Riley, chauffeur)
Alastair Hunter (2nd Employee)
Griselda Harvey (Mrs. Kirby)
John Le Mesurier (Prosecuting attorney)
Gordon Harris (CID man)
Lucy Griffiths (Cashier)
Helen Goss (Woman employer)
Derek Prentice (1st Employee)
Donal Donnelly (Feeney)
Diana Chesney (Barmaid)
Robert Bruce (Defending attorney)
Joan Ingram (Lady Bellamy)
Derek Bond (Detective Sgt. Eric Kirby)
Frank Lawton (Detective Sgt. Liggott)
John Loder (Ponsford, "The Dupe")
Marjorie Rhodes (Mrs. Saparelli)
Michael Trubshawe (Sgt. Golightly)
Jack Watling (Rev. Julian Small)
Henry Longhurst (Rev. Mr. Courtney)
Michael Shepley (Sir Rupert Bellamy)
Nigel Fitzgerald (Inspector Cameron)
Robert Raglan (Dawson)
Maureen Potter (Ethel Sparrow)
Laurence Naismith (Arthur Sayer)
James Hayter (Robert Mason)
Ronald Howard (Paul Delafield)
Howard Marion-Crawford (Chief of Scotland Yard)