Philo Vance

Wilfrid Hyde-White

Angela Hargreaves

Kathleen Kelly

Inspector Moor

Wally Patch

Dr. Bliss

Henri De Vries

Donald Scarlett

John Robinson

Salveter

Geoffrey Wallace

Cinematography

Ronald Neame

Director

Michael Hankinson

Screenplay

Selwyn Jepson

Producer

Anthony Havelock-Allan