Here are some movies with bad endings: Memento tells the story of a man who has lost his short-term memory and seeks to kill his wife and her lover. "Seven" tells the story of a police investigator who is tortured by the case he is investigating, causing him to lose his humanity and morality. The Prestige is about the competition between two magicians whose magic shows become more and more complicated until the audience can't guess the ending. The Dead Poets Society tells the story of a high school that invites a teacher to change the attitudes and values of its students, but ultimately leads to a rebellion. The Butterfly Effect is about a man who discovers that he can change the past and have a profound impact on his life and his loved ones. The endings of the above movies were very unexpected but might leave a deep impression on the audience.