On screen
Cast
13 credited performers
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
Artwork unavailable
George Thorpe
Comelieu
William Phipps
Janvier
Artwork unavailable
William Cottrell
Moers
Artwork unavailable
Chaz Chase
Waiter
Wilfrid Hyde-White
Professor Grollet
Howard Vernon
Inspector (uncredited)