Jean Richard

Character: Commissioner Etienne Ledru

Nicole Courcel

Character: Anne-Marie Ledrut

Sophie Daumier

Character: Juliette Ledrut

Junie Astor

Character: Mrs. Terrasse

René Clermont

Character: Director of the lab

Bernard Dhéran

Character: Dr. Chauvin

Jean Galland

Character: Mr. Duquesne

Jacques Hilling

Character: Taxi driver

François Patrice

Character: Inspector Martin

Jacques Perrin

Character: Philippe Ledrut

Annick Tanguy

Character: Janine, maid

Yves Arcanel

Character:

Jean-Pierre Cassel

Character: Duquenne's son

Michel Nastorg

Character: Medical examiner

Raymond Pélissier

Character: Principal

Andrée Lelièvre

Character:

Yvon Sarray

Character: Neighbor

Denise Grey

Character: Mrs. Legrand, the mother-in-law

Noël Roquevert

Character: Commissioner Reboux

René Berthier

Character: (uncredited)

Lucien Camiret

Character: (uncredited)

Anne Lelièvre

Character: (uncredited)

Dominique Marcas

Character: Telephonist (uncredited)

Alain Nobis

Character: "Fuit défendu" waiter (uncredited)

Georges Sellier

Character: (uncredited)