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