15 passengers are found frozen to death in a bus. They wear festive clothes, but did not know each other. Sandra Winckler starts an investigation.

Where did the bus come from? A man frozen to death and a missing woman who just had a baby. The case reminds Officer Winckler of a case ten years ago.

Winckler gets a new partner, veteran detective Paul Maisonneuve, but she soon suspects that someone from his past is out to settle an old score.

In the model home, Detectives Winckler and Maisonneuve uncover evidence that Kaz Gorbier is still alive, but is he the man they're looking for?

When Kaz Gorbier takes hostages and flees, Detective Maisonneuve sets out after him -- but Gorbier has a few dirty tricks up his sleeve.

Detective Sandra Winckler follows a bizarre clue to begin unraveling a ghastly crime perpetrated in a model home.

With the clock ticking, Detective Winckler sets out to save her partner, Detective Maisonneuve, from the clutches of Kaz Gorbier.

At a wind turbine, the body of a young woman who just gave birth is found. Sandra believes another bus will be found in the surrounding area.

For safety reasons, Sandra may be taken off the case. She refuses to step down. Catherine thinks she found the killer, but Sandra is not so sure.

Detective Maisonneuve discovers the culprit responsible for the harassment he has suffered and its grim connection to the unearthed bodies.

Antoine is kidnapped, probably by the unknown killer. Sandra and Catherine devise a plan to get Martin Souriau to lead them to the killer.

Sandra investigates the orphanage where the killer lived as a child. She has a list of names and decides to track all children down.

Sandra is captured by the killer, who wants to 'marry’ her. The ceremony consists of killing her previous partners and lovers.

In the season finale, all questions are answered. Can Sandra prevent the wedding? Will Catherine find her missing baby? And who is the Minotaur?