Cain

Nothing is settled between Caïn, Lucie, and Legrand. A murder investigation involving a soldier reignites tensions, as Lucie's deep ties to the military clash with Caïn's anarchist views. The arrival of Marie Saint-Hilaire, Lucie's former section leader, may help the investigation inside the regiment - though Caïn remains skeptical.

Psychic Sandra Vernon arrives at the SRPJ claiming she witnessed a murder in a vision. Caïn mocks her story until a real disappearance matches her account. The investigation points to a garage owner suspected of targeting women, but evidence is scarce. As another crime occurs, Caïn must navigate a case balancing forensic science, the occult, and his growing curiosity about his future with Lucie.

wenty years after Caïn arrested serial killer Samuel Labeyrie, a copycat begins recreating his murders. Samuel then reveals a hidden secret: his 13th victim was actually killed by his daughter Sara, whom he protected before she vanished. Convinced she is now the copycat, Samuel asks Caïn to find her.

During a live magic show, illusionist Wanda Zeller vanishes from a glass tank before a stunned audience. With only blood left behind, Caïn investigates a circle of magicians filled with rivalries, secrets, and manipulation. As another murder occurs, he finds himself trapped in a dangerous game where illusion and reality become impossible to separate.