
In a moment of madness a middle-aged, married and respectable pharmacist kills a young woman who is sun-bathing by a lake. Unable to take in what he has done, he flees from the scene of the crime and behaves as if nothing has happened. Eventually her boyfriend is charged with the crime and, in a strange twist of fate, the killer finds himself serving on the jury.

Grégoire Duval, pharmacist

Doctor Hess, veterinarian

Attorney General

Geneviève Duval, Grégoire's wife

Sylvain Sautral, photographer and accused

Maître Adreux, defense lawyer

Medical examiner

Garampon, fisherman on his boat

Alice Moreux, Sylvain's mistress
Mrs. Sevestrain, witness at the hearing

Catherine Nortier, the victim

President of the tribunal
Tax collector
Daughter of Gregory and Genevieve

Henri Souchon, boss of the brewery
Mrs. Souchon, boss of the brasserie

Investigating judge

Albert Testut, witness at the hearing
Police commissioner

Laurent Duval, son of Grégoire and Geneviève

Philibert, pharmacy employee
Cabaret dancer