Josh Hartnett stars as a serial killer known as 'The Butcher' in M. Night Shyamalan's new thriller 'Trap', which follows a father and his daughter at a concert that is a police trap to catch him. Hartnett drew inspiration from real-life 'psychopaths' in Hollywood, noting the lack of empathy among some powerful figures. The film is told from the killer's perspective, tricking the audience into sympathizing with him initially. Reviews are mixed, with some praising its tension and others criticizing its contrived twists. The plot involves Cooper (The Butcher) trying to escape the concert, eventually kidnapping the pop star Lady Raven, who helps reveal his true identity to his family. The ending is left open, hinting at Cooper's potential future escape.