Jack Watling

Dennis Willows

Rona Anderson

Sallie Harbord

John Horsley

Peter Hastings

Russell Napier

Inspector Simmons

Kenneth Kent

Dr. Julian Cole

Mary Jones

Florence Cole

Alastair Hunter

Sgt. Thorpe

Joan Hickson

Miss Edinger

John Le Mesurier

Phinneas Tilliard

June Ashley

Madeline Tilliard

Hélène Burls

Mrs. James

Charles Hammond

Juror at Inquest (uncredited)

Edward French

Bit Part (uncredited)

Peter Gilmore

Bit Part (uncredited)

Arthur Gross

Bit Part (uncredited)

Charles Saunders