Charles Laughton
Inspector Jules Maigret
Franchot Tone
Johann Radek
Burgess Meredith
Joseph Heurtin
Robert Hutton
Bill Kirby
Jean Wallace
Edna Wallace
Patricia Roc
Helen Kirby
Belita
Gisella Heurtin
William Phipps
Janvier
Wilfrid Hyde-White
Professor Grollet
Howard Vernon
Inspector (uncredited)
George Thorpe
Comelieu
William Cottrell
Moers
Chaz Chase
Waiter
