Blanche is wounded, intervening during a hold-up. One of the criminals is arrested by the police, but his accomplice manages to get away and breaks-into the home of the CEO Pierre Garrigue. The burglar takes Garrigue's dog hostage, threatening to kill it if his partner isn't released...

A little girl, found prostrate in a cupboard, is the sole witness to a murder. She alone will be able to identify the murderer, a psychopathic killer who has already killed before. But she's in shock and unable to talk...

Leaving the cinema, a child is killed by a hit-and-run driver. Witnesses identify the registration number as being that of a diplomatic vehicle.

Two police officers are involved in the death of a drug dealer. One of them, Alberge, is an old friend of Franklin. The latter believes his friend when he says it was legitimate defence, despite the suspicions that surround the circumstances of the incident.

A psychiatric patient, obsessed by the idea of being a policeman, hasn't returned to hospital after being allowed out on leave. He succeeds in stealing a police car, uniform and weapon, and begins working as a police officer. His behaviour rapidly becomes threatening...

Following a routine identity check, Viking spots Bellaïche, a gangster known for his involvement in organised crime. Seriously wounded during an attempted arrest, Viking nevertheless succeeds in also wounding the gangster, who then takes a doctor as a hostage...