Commissioner Etienne Ledru

Anne-Marie Ledrut

Juliette Ledrut

Mrs. Terrasse

Director of the lab

Dr. Chauvin

Mr. Duquesne

Taxi driver

Inspector Martin

Philippe Ledrut

Janine, maid

Acting

Duquenne's son

Medical examiner

Principal

Acting

Neighbor

Mrs. Legrand, the mother-in-law

Commissioner Reboux

(uncredited)

(uncredited)

(uncredited)

Telephonist (uncredited)

"Fuit défendu" waiter (uncredited)

(uncredited)

Writing

Writing

Directing

Directing