An astrophysicist dies from a lightning strike - with no storm in sight. When information is leaked, public opinion begins to turn against the police.

Father Louis Desforges is found stabbed to death in a monastery. When it's revealed that he was hiding a vital part of his identity, the investigation takes an interesting turn.

A young woman is found heavily drugged and in possession of a murder weapon from a crime she couldn't have committed as it happened 21 years previously

A crime occurs at the Gare du Nord train station. The duo need the help of the sole eyewitness, the victim's 14-year-old autistic son, Jules. Meanwhile, Astrid finds the academy challenging.

A fashion photographer is found dead with a wooden stake through the heart. Working around vampire references, can Raphaëlle and Astrid uncover what really happened?

The team are drawn into a labyrinthine investigation when a biologist with a passion for plant intelligence dies in suspicious circumstances in a greenhouse

Astrid's exam looms and she worries about the stress. Meanwhile, the investigation into the murder of a homeless man becomes increasingly personal for her.