A young girl is found dead in the dumpster of her father's nightclub; Alain Louvion warns Filiponi that if he finds his daughter's murderer first, he'll have his revenge.

A high-end realtor is found dead in the luxurious swimming pool of a villa she was listing; as Filiponi and Contance dig into her life they discover that no one really knew the victim; each answered question leads to a new surprise.

Margot, a young French swimmer, is assaulted in the showers of her swimming club; only her coach was at the club with her, but Margot has developed traumatic amnesia so it's up to Constance and Filiponi to figure out if there are any other suspects.

Victor Jacquet, the director of a textile factory, is murdered; Filiponi and Constance first focus on the victim, a singularly authoritarian man preparing to hand over the business to his son; they soon turn their attention to a tangled family.

Judge Claire Delaunay is found dead at the foot of a cliff, but she did not commit suicide; Filiponi leads the investigation towards the judge's husband and keeps his own relationship with Delaunay a secret.

Petty criminal Fabien Varelle is found dead and Filiponi and Constance are convinced that it is no accident; is he the victim of an over-zealous neighborhood watch? Has his secret life as a computer genius caught up with him?