20 years ago, Fanny Legoff was accused of being responsible for the disappearance of her best friend, Laura Perrier, in the forest of Brocéliande. Laura's body was never found. Since then, Fanny has rebuilt her life in Paris, where she has become a biologist. Until the day Fannyreceives a strange parcel... containing a sickle covered in Laura's blood. Who sent her the sword? And why?
