Jack Watling

Dennis Willows

Rona Anderson

Sallie Harbord

John Horsley

Peter Hastings

Russell Napier

Inspector Simmons

Kenneth Kent

Dr. Julian Cole

Alastair Hunter

Sgt. Thorpe

Joan Hickson

Miss Edinger

John Le Mesurier

Phinneas Tilliard

June Ashley

Madeline Tilliard

Peter Gilmore

Bit Part (uncredited)

Neil Hallett

Police Constable Guarding Hastings' Home (uncredited)

Dandy Nichols

Waitress (uncredited)