Jeanne Deber, known as "La Mante", the famous serial murderer who terrorized France more than 20 years ago, is forced by the police to come out of isolation to track down her copycat. She agrees to collaborate on one condition: to have only one interlocutor, Damien Carrot, her son, who became a cop because of the crimes of his mother, and who refuses all contact with her since her arrest.

Frédérique Belas Virginie Delorme
Carole Bouquetas Jeanne Deber
Fred Testotas Damien Carrot
Pascal Demolonas Commissaire Feracci
Robinson Stéveninas Alex Crozet
Jacques Weberas Charles Carrot
Serge Riaboukineas Sébastien Crozet
Manon Azemas Lucie Carrot
Élodie Navarreas Szofia Kovacs
Garance Thénaultas Journaliste hôpital