When a lawyer collapses in a courtroom, Raphaëlle and Astrid start an investigation which leads them to a house filled with supernatural phenomena.

Astrid and Raphaëlle find out that the dead body discovered after the collapse of an underground gallery is that of an 80 year-old alchemist.

After the president of an autistic association dies mysteriously, a new corpse is found. Though officially deceased days earlier, he is a suspect.

A trainee is found dead in the huge organ of the Maison de la Radio. Astrid and Raphaëlle investigate the very heart of the instrument and meet an organist prodigy and her cantankerous old teacher. Things get tough when a second lifeless body is found near the organ. The modus operandi is the same... A track is beginning to emerge: what if it was the music that kills?

A renowned astrophysicist is found struck down even though no storm had occurred at the time of his death. Social networks take over the case and cry conspiracy when we learn that the victim was about to divulge a state secret.

Astrid and Raphaelle investigate a crime committed in the middle of the Gare du Nord train station in Paris. The only witness to the incident was the victim's son, Jules, a 12-year-old autistic boy.

The heir of a rich Breton family is found dead in a bar. Problem: he already died two years ago! Raphaëlle and Astrid travel to Brittany to uncover the darkest secrets of this illustrious family...