The Mantis

Decades after she was captured, imprisoned serial killer Jeanne Deber is asked by Paris' police commissioner to help solve a series of unsolved murders being committed by someone who is copying her crimes from years earlier. Jeanne -- who was known as "The Mantis" during her days as a criminal -- agrees, but only if estranged son Damien -- now a detective -- works alongside her. He reluctantly agrees so that they can try to end the copycat's crime spree. Time is of the essence because as the investigation goes on, the number of victims continues to rise.