Thriller genre conventions include protagonists facing problems against the clock such as escapes, missions or mysteries involving unseen threats. Subgenres include crime thrillers about serial killers or manhunts; film noir of the 1940s-50s with cynical heroes and flashbacks; psychological thrillers relying on the mind over physical threats; science fiction thrillers exploring "future gone bad" scenarios; and religious thrillers involving exorcisms or demonic possession. Settings include ordinary cities and exotic locales, while characters typically involve criminals, victims, and deranged individuals. Famous thriller films include Psycho, Fight Club, Seven, The Dark Knight, Leon: The Professional, The Birds, and Vertigo.