Summary 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 have an alibi for the time of the crime, which forensic doctor Alexander Brandt has committed. To solve the riddle, Sophie relies on her intuition. The fact that the young professional is self-confident and makes mistakes causes her anger with Deville. Tensions also arise with her husband Thomas Leclercq, who is her superior as head of the department. While he demands of her to give up the grueling search for her missing son, she secretly goes on. An anonymous clue gives new hope to find Arthur, who has been missing for over three years. Sophie begins to investigate on her own.

• Crime
• Drama
• Mystery
• Thriller