After a girl is kidnapped and then recovered, she refuses to reveal the identity of her captor.

The Investigation Unit searches for a suspect in the kidnapping of Romane and Audrey.

An incarcerated murderer wishes to apologise to the families of his 12 victims before dying.

Patrick Lacenaire continues his efforts to obtain his pardon.

The body of Vicky, a teenage girl, is fished out of the river.

The Investigations Unit continues its research to find Vicky's killer.

In an abandoned house, five corpses are found by a woman who is searching for her daughter.

The Investigations Unit perseveres to find Adèle and unravel the mystery.

The Unit mobilises to apprehend the killer before the list of his victims grows longer.

The serial killer is still on the run and the Unit discovers his involvement on a forum.

Eve finally knows the truth. Buried for years in her mind, the horrible memory of the night she lost her son comes to the surface.

A body is found in a van parked in front of the new police department building; a man with a troubled past seems to be linked to Maryse's assault.

A young woman is found in the middle of the night in a deserted street. She is barely conscious and wearing a hospital gown.

Bernard is attacked at the illegal clinic. As he recovers in the hospital, Maryse and the rest of the unit continue their search to try to figure out who is behind it.

A well-known programmer with a criminal past claims to have been manipulated by a hacker into committing an equally gruesome and gratuitous murder.

A hacker sabotages the police department's computer system to prevent the unit from shedding light on their latest investigation. The hacker demands a ransom to put everything back in place.

The former leader of an outlaw motorcycle gang has just woken up from a long coma. This man is the only survivor of a bloody massacre that shook the underworld a few years ago.

When the attempted murder of the former leader of the bikers fails, the investigation unit must urgently find a secret place to hide him during the investigation.

Eve finally sees William again. The reunion turns her upside down and Eve even goes so far as to lie so she does not have to face reality.

While hundreds of Internet users watch a live video of Val-27 sequestered in an unknown location, the entire police department, led by Maryse and Bernard, is actively looking for her.