A little girl disappears just as a supermarket is closing. A first suspect is arrested. But the security cameras show that she had disappeared somewhere in the bakery area. The new suspect is now Ludovic, a 15 year-old bakery apprentice...

An ordinary accountant is violently assaulted by two men. A stranger comes to his rescue and provides first aid, but runs away as the police arrive. The Good Samaritan is Omar, an African doctor, a refugee in France illegally. But his statement could bring down Bati Morelli, a major gangster.

A woman waits for the lift, the doors open and she enters without looking, falling five stories down the lift shaft. The last straw for the residents, tired their ever-deteriorating environment, who demand that those responsible are found. Beneath the machinery cables, the investigators find a hoard of drugs.

Whilst doing their regular beat, the police officers come across a man of Asian origin, who panics when he sees them. As he flees, he throws away a box containing a woman's finger, recently amputated.

The police are called to the scene of a serious traffic accident. Various items found in the vehicle enable them to make a connection with the murder of a young girl for which a down-and-out had been charged and found guilty.

The body of a woman has been placed on a bench in the Bois de Vincennes. The corpse is dressed in luxury clothing but it rapidly becomes obvious that she was naked when killed. She is soon identified as being Marie Guibert, wife of a renowned cardiologist.