A new victim of the formidable serial killer "the Werewolf" is found under a Parisian bridge on a full moon night. Our two heroines quickly orient their investigation on the trail of an enigmatic voodoo ritual...

On a film set, a famous actor is accidentally killed by a blank bullet. Astrid and Raphaëlle soon discover that it is indeed a murder and that it could only be orchestrated by a real crime expert...