Anthology film with three shorts each featuring a famous detective: Monsieur Wens, Lemmy Caution and Maigret.
as Commissioner Jules Maigret (segment "Le témoignage d'un enfant de choeur")
as Inspector Wenceslas Vorobeïtchik, aka 'Wens' (segment "L'alibi de monsieur Wens")
as G'man Lemmy Caution (segment "Je suis un tendre")
as Commissioner Malaise (segment "L'alibi de monsieur Wens")
as Concierge (segment "L'alibi de monsieur Wens")
as Florence Garnier (segment "L'alibi de monsieur Wens")
as Denise (segment "L'alibi de monsieur Wens")
as Heldinge (segment "L'alibi de monsieur Wens")
as Hartner (segment "Je suis un tendre")
as Gisella Hauptmann (segment "Je suis un tendre")
as Michèle Leroy (segment "Je suis un tendre")
as Leblond (segment "Je suis un tendre")
as Hubert (segment "Je suis un tendre")
as Justin (segment "Le témoignage d'un enfant de choeur")
as Simon Lesueur, second-hand dealer (segment "Le témoignage d'un enfant de choeur")
as Inspector Janvier (segment "Le témoignage d'un enfant de choeur")
as Madame Maigret (segment "Le témoignage d'un enfant de choeur")
as Justin's mother (segment "Le témoignage d'un enfant de choeur")
as Commentary (voice)
as Judge (segment "Le témoignage d'un enfant de choeur") (uncredited)
as (uncredited)
as (uncredited)
as (uncredited)
as Lucas (uncredited)
as (uncredited)
as (uncredited)
as (segment "Le témoignage d'un enfant de choeur") (uncredited)
as Director (uncredited)
as (uncredited)
as Second concierge (uncredited)
as Police Director (uncredited)
as Priest (segment "Le témoignage d'un enfant de choeur") (uncredited)
as Doctor (uncredited)
as Brigadier (segment "Le témoignage d'un enfant de choeur") (uncredited)
as First concierge (uncredited)
as (uncredited)
as (segment "Le témoignage d'un enfant de choeur") (uncredited)
as (uncredited)
