She embraces and forgives her father's killer.

1% of French people are psychopaths; he explains how to spot them ahead of the release of the movie *Trap*.

A new episode on LEGEND featuring Marwan Mery, a negotiator and expert on deception. To mark the release of the film *Trap* by director M. Night Shyamalan—which tells the story of a psychopathic serial killer trying to escape a concert venue surrounded by police—we asked Marwan how he analyzes dangerous profiles and what methods he uses to tell when someone is lying!