
Candice and Antoine's relationship is back to square one after his brain surgery impairs his memory. While the team works to catch killers in the south of France, the past begins to catch up with them as old secrets and new traumas come to the fore.
A woman's body is found in her home with her head bashed in, her purse gone, and other signs of a break-in. After learning there had been a dispute over the house, Candice realizes the victim may not be who she thought.
A body is spotted beneath a bridge, sparking a tense investigation involving victims of a nightclub fire. Meanwhile, Candice and Antoine deal with the fallout of his memory loss on their romantic relationships and new member Ismael joins the team.
Candice finds out Antoine has been investigating the disappearance of a childhood friend who has not been seen for three days. As the team looks into the trafficking of electronic waste, they end up face-to-face with the missing man's "patients."
A paraplegic man is found dead in bed, his legs covered in puncture marks. Was he killed by his wife, her lover, or his sex aide? Whoever did it, the motive seems to be jealousy - an emotion Candice is also struggling with in her feelings for Antoine.
The team seeks answers among the local immigrant community after a young man is strangled to death. As Candice makes an effort to move on from Antoine, she finds things heating up with a charming fireman.
When a video-games fanatic is killed in his bedroom while his mother is home, she becomes the prime suspect. Antoine gets himself into a mess and needs Candice to get him out of it.
As the entire unit attends a day of training on "procedural portfolio management," Candice has to leave after she gets a text message from her daughter asking for her help. Concern for their boss mounts when she fails to return.
While Candice is being held hostage along with a kidnapped 10-year-old, the team works day and night to get to the bottom of her strange disappearance and find her.
The unit are called to an aviation school when one of the instructors turns up dead inside a mock-up of a Boeing 747. Antoine's memory begins to return but Candice continues to deal with the trauma of her abduction.
The mood darkens at the station house as two Internal Affairs officers start snooping around, trying to investigate Candice. The team unites behind her and she and Antoine grow closer than ever.