Thriller films typically involve suspense and excitement that builds throughout the film until reaching a climax. They are usually set in busy urban or suburban areas to allow for dense populations. The main narrative focuses on a puzzle or investigation that the protagonist works to solve, often using violence that reveals the roles of institutions like law enforcement. Thrillers prefer rational explanations over supernatural ones and generally feature protagonists and antagonists with similar qualities, with the protagonist bringing justice against the antagonist's injustice by solving the mystery.