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.
Bernard Blier
Grégoire Duval pharmacien
Maurice Biraud
Le docteur Hess - le vétérinaire
Francis Blanche
Le procureur général
Danièle Delorme
Geneviève Duval
Jacques Riberolles
Sylvain Sautral, photographe et accusé
Yves Barsacq
Maître Adreux - l'avocat de la défense
Henri Crémieux
Le médecin légiste
Robert Dalban
Garampon -le pêcheur sur sa barque
