Guest Stars Helen Shingler as Mme. Maigret Sheila Ballantine as Raymonde John Moore as Blanchard Marjorie Wilde as Leontine David Grahame as Monsieur Lachaume Robert Young as Court Usher Peter Thompson as Warder Alan Wheatley as Grandmaison Alan Rowe as Alain Vernoux Jon Rumney as Lomel Edward Chapman as Hubert Vernoux Charles Maunsell as Arsene Patrick Scanlan as Clerk Philip Howard as Cafe Proprietor Henry Manning as A Doctor Wynne Clark as Madame Chabot Margaret Rawlings as Madame Vernoux John Caesar as Labourer Julian d'Albie as Robert de Courcon Shirley Cain as Jeanne Vernoux Norman Scace as Inspector Feron Ray Grover as Man in the Cafe Reginald Jessup as Richet
