Cecile, a young girl who goes to the offices of the Judicial Police several times in a row to complain about nightly visits to the apartment she occupies with her aunt, is not taken seriously by the police until she the day she is found murdered.

A ballet producer returns to his native town and schemes to avenge himself on the family who tried to murder him 20 years before.

Young, handsome, dashing but cynical, Octave Mouret arrives in Paris, determined to conquer the belles of the capital.

Michel Piccoli plays a police inspector whose best friend is murdered on the orders of gang boss Charles Vanel. The inspector knows full well that Vanel is too crafty and well-connected to ever stand trial for his crime, so he carefully lays a subtle trap for his adversary. Unfortunately, both Piccoli and Vanel are thwarted by a pair of scheming females.

Saint-Maurice, an ordinary peaceful village, lived healthily so much so that the local doctor's practice was scant. But that was before Dr. Parpalaid retired and was replaced by a charlatan by the name of Knock. A real genius this one, for he soon managed to persuade everyone that they were ill. And not only didn't they resent him but they even loved their physician, who made a fortune and brought prosperity to the village by turning it into a big hospital.

June 1944, a French town towards the end of the occupation. Following several attacks perpetrated by the resistance, the inhabitants who listen to English radio are rounded up by the Germans in a prison and considered as hostages. In one of the cells are found men from all walks of life: an aristocrat, the Viscount of Saint-Leu, Doctor Noblet, a resistance fighter, Béquille the wanderer with a wooden leg, and a strange character nicknamed "Black Market". The latter arouses mistrust among the prisoners, because it could well have been introduced by the enemy.