During a prestigious chess tournament, one of the favorite players collapses in the middle of a match, struck down by poison! Astrid and Raphaëlle then realize that they are at the heart of a bloody, life-size game of chess...

A famous environmental activist is murdered in public by a young woman, who is immediately arrested. Things get tougher for our heroines when the criminal claims to come from the future...

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...

Raphaëlle is found, with amnesia, at the wheel of an accident car, the body of a man shot to death beside her. Guilty or innocent? It will take all the talent of Astrid and Nicolas to help him untangle the tortuous thread of events...