Juliette Petiot

In 1980s Paris - Patrick, Dov, Yvan and Serge are young men seeking success in love and business... with varying success.

Not less than 3 men and 40 animals were found dead on the Breton beaches. The identity of the killer is an open secret: green algae. Inès Léraud is still a young journalist when, driven by an ecological conscience, she decides to go to Brittany to investigate this phenomenon. Through her encounters with whistleblowers, scientists, farmers and politicians, she elucidates, not without difficulty, half a century of silence: samples that disappear in laboratories, bodies buried before being autopsied, influence games, pressure... Will the truth win?

Morgane is 38-years old, has three children, two exes and an IQ of 160; her destiny as a cleaner is turned upside-down when her extraordinary abilities are spotted by the police who offer her a job as a consultant.

Murderers think they have committed the perfect crime. But the investigators will do everything to find the flaw in the Machiavellian plan devised by each killer.