Sophie Cross

The teacher Claude Lemaire was slain after a parents' evening. Sophie Cross is commissioned by chief investigator Gabriel Deville to examine the victim's private life with her colleagues Amina Dequesne and Fred Fontaine. His ex-wife Sandrine, whom he left for his much younger partner Estelle, and his daughter Jade are on the dead. Sophie finds a suspect in parenting because the 54-year-old Lemaire was suspected of having sexually molested a schoolgirl. The investigators also see a motive for the crime in Estelle's parents. The only catch: all witnesses and suspects ... 

A newly emerged photo of her missing son awakens new hope in Sophie Cross. She also receives support from her husband Thomas Leclercq, who, through new evidence, sets out with Sophie to find Arthur, who disappeared more than three years ago. Sophie also gets unexpected support from her superior Gabriel Deville, who advises her face to face: Never give up. The chief investigator, however, gets himself at the center of official investigations. After the murder of a private detective, the murder weapon caused a stir: the same pistol was used in a robbery five years ago.