Josh Hartnett modelled his ‘Trap’ serial killer after certain “people in our business”. The 46-year-old actor stars in M. Night Shyamalan’s new movie as Cooper, a father taking his daughter to a concert where people have set up a sting operation to take down The Butcher, his homicidal alter ego, and he explained he looked at “people who are at the top” for inspiration on his alter ego’s cold-blooded ruthlessness. He told Entertainment Weekly: “There are a lot of CEOs, politicians, people in our business… a lot of people who are at the top. “They don’t mind stepping over people or doing horribl…