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!

The show’s own verdict is on its page.