Jack Hawkins
Insp. George Gideon
Anna Lee
Mrs. Kate Gideon
Anna Massey
Sally Gideon
Andrew Ray
PC Simon Farnaby-Green
Dianne Foster
Joanna Delafield
Cyril Cusack
Herbert 'Birdie' Sparrow
James Hayter
Robert Mason
Derek Bond
Det. Sgt. Eric Kirby
Howard Marion-Crawford
The Chief
John Loder
Ponsford 'The Duke'
Barry Keegan
Riley
Frank Lawton
Det. Sgt. Liggot
Michael Trubshawe
Sergeant Golightly
Grizelda Hervey
Mrs. Kirby
Henry B. Longhurst
Rev. Mr. Courtney
Jack Watling
Rev. Julian Small
Maureen Potter
Mrs. Ethel Sparrow
Donal Donnelly
Feeney
Dervis Ward
Simmo
Marjorie Rhodes
Mrs. Saparelli
Laurence Naismith
Arthur Sayer
Miles Malleson
The Judge
Ronald Howard
Paul Delafield
David Aylmer
Manners
Brian Smith
White-Douglas
James Hayter
Mason
Michael Shepley
Sir Rupert Bellamy
Joan Ingram
Lady Bellamy
John Le Mesurier
Barrister (uncredited)
Yvonne Mitchell
Policewoman (uncredited)