The boss of a Cap d'Agde nightclub is found murdered in her own office. Elisabeth Richard and Charles Jouanic get back together to investigate what looks like a crime with an obvious motive, since the safe has been emptied of its money.
In Saint-Affrique, Aveyron, big-shot farmer Pierre Loiseau is found murdered.
When her daughter Julie disappears in the basements of Paris without leaving a trace, Catherine Suzini is convinced that she alone can find it. Former cop, retired as well as drifting, she will have to resolve to team up with Raphael, the teammate of his daughter. Together, they will leave the surface and sink into the depths of Paris to embark on a terrifying and frenzied race...
