Olivia Dubois, an ordinary student, is murdered, stabbed seven times. Her grandmother refuses to speak to law enforcement. Her ex-fiancé, who is one of the suspects, has only a flimsy alibi for the night of the crime. Someone was harassing the young woman on the phone. In her notebook, Olivia had the number of judge Nadia Lintz. These many elements which leave Commander Rovère perplexed. (thetvdb.com)