Thriller movies aim to excite and unsettle audiences through suspense. They often involve criminals, stalkers, or psychos threatening innocent victims and engaging in plots about terrorism, conspiracies, or twisted relationships. Common conventions include an antagonist opposing a protagonist, plot twists, tension, mystery, and a dark atmosphere. Alfred Hitchcock is considered the master of thrillers, directing influential films like Psycho that helped shape the genre. Thrillers can also combine with other genres, such as crime thrillers like Sin City or supernatural thrillers like The Conjuring.