Michaël Varèse, 38, is found dead in his home, strangled and tied to his bed. Commandant Nadia Angeli remembers that she saw him the day before with Adjudant Sara Cazanova. Apparently, Varèse was having an affair an had a dispute about it with his wife, Audrey. Cazanova becomes the number one suspect when her phone is found at the crime scene and she is nowhere to be found. At the same time, Lieutenant Juliette Delage arrives from Paris to follow a lead in an old case. Lieutenant Roxane Janin recovers from her injuries and has some news that will surprise the team.
—mgallegog