Lambert, a recovering sex addict, tries to redeem himself by becoming a marriage counsellor. He stays abstinent for several months, but his alluring assistant's unbridled sexuality tests his resolve.

The head of a famous artist with a sordid past is found in the catacombs in Paris. In his studio, Commissaire Rousseau and the young profiler Mariella De Luca discover a second decapitated body, his wife's. The mystery deepens when another head is found a few days later.

Manuel passes 18 months at Buchenwald before his return to Paris. He wonders even before his arrival who will have the patience and passion to listen to his narrative. He chooses silence.

Nina, daughter of a Greek woman who left Egypt in 1956, goes for the first time to Alexandria, discovers the city and the longing of her mother to tell her an old love story that she had years ago with a French. but the mother doesn't tell her the truth, who knows why.