An employee of the Natural History Museum is found dead near a dinosaur skeleton; Raphaëlle and Astrid investigate what lies behind this bizarre crime.

A famous writer is found dead -- poisoned -- and Raphaëlle is convinced it is murder, even though the man's flat is locked from the inside; Astrid and Raphaëlle enter the world of publishing to investigate.

A man covered in blood collapses and dies on the bus; the investigation leads the duo to the charismatic leader of a gang of eco-terrorists.

Raphaëlle needs all the help Astrid can give when a renowned lawyer dies of fear in court. But when Astrid becomes overwhelmed by press attention, she must fight to keep her on the team.