Jack Hawkins as Insp. George Gideon

Anna Lee as Mrs. Kate Gideon

Anna Massey as Sally Gideon

Andrew Ray as PC Simon Farnaby-Green

Dianne Foster as Joanna Delafield

Cyril Cusack as Herbert 'Birdie' Sparrow

James Hayter as Robert Mason

Derek Bond as Det. Sgt. Eric Kirby

Howard Marion-Crawford as The Chief

John Loder as Ponsford 'The Duke'

Barry Keegan as Riley

Frank Lawton as Det. Sgt. Liggot

Michael Trubshawe as Sergeant Golightly

Grizelda Hervey as Mrs. Kirby

Henry B. Longhurst as Rev. Mr. Courtney

Jack Watling as Rev. Julian Small

Maureen Potter as Mrs. Ethel Sparrow

Donal Donnelly as Feeney

Dervis Ward as Simmo

Marjorie Rhodes as Mrs. Saparelli

Laurence Naismith as Arthur Sayer

Miles Malleson as The Judge

Ronald Howard as Paul Delafield

David Aylmer as Manners

Brian Smith as White-Douglas

James Hayter as Mason

Michael Shepley as Sir Rupert Bellamy

Joan Ingram as Lady Bellamy

John Le Mesurier as Barrister