2. Episode 2

As the investigation into Leïla's murder intensifies, Vidal's team focuses their efforts on Olivio Palomyno, a doctor exhibiting strange behaviour; during their surveillance of the suspect, the officers uncover increasingly disturbing clues.

3. Episode 3

Palomyno is held and interrogated as the prime suspect in Leïla's murder; while he has been the main lead for months, the investigation takes a turn when another young woman disappears under troubling circumstances.

4. Episode 4

As the world prepares to enter the 21st century, the investigation stalls, plunging the team into doubt; to assist them, a controversial profiler is sent from Paris, whose extravagant theories complicate the investigators' work even further.

5. Episode 5

The investigators race against time to apprehend a new suspect. However, his confessions raise more questions than answers. Nora's body is found, but the investigation remains mired in uncertainties about the other victims.

6. Episode 6

After sixteen years' on the run, the perpetrator of two of the murders is caught, thanks to a DNA match. During an interrogation, Flore, with Vidal's help, forces the suspect to confess to murdering Leïla and Marianne.