Depicts the story of the couple of psychopaths formed by Michel Fourniret and Monique Olivier. Dangerous, manipulative, they have lectured their entourage, their family, their neighbors, their judges. They passed several times through the meshes of the net without ever being truly worried. In 2008 Michel Fourniret was sentenced to life imprisonment for abducting and murdering seven girls. His wife Monique Olivier was sentenced to life imprisonment with the possibility of release after 28 years. The victims, who were between 13 and 21 years old, were shot, sprinkled or cut to death.