Cruel Intentions 3 is an American drama/thriller film, directed by Scott Ziehl and released direct-to-video in 2004. Despite its name, the movie has almost no relation to the two previous films in the series, except that the lead character in the film, Cassidy Merteuil, is a cousin of one the characters, Kathryn Merteuil, in the first movie.
This film once again portrays seduction and betrayal among the teenaged idle rich. Cassidy Merteuil (Kristina Anapau) is a beautiful, yet conniving and manipulative, student at an exclusive Santa Barbara college. Jason Argyle (Kerr Smith) and Patrick Bates (Nathan Wetherington) are roommates at the same school. After executing a devious plan to bed Cassidy, the latter encourages the two boys to compete against each other. While Jason has to seduce Sheila (Natalie Ramsey), who is in a steady relationship with Michael (Tom Parker), Patrick has to seduce Alison (Melissa Yvonne Lewis), who is already engaged. After Jason succeeds in his part, Patrick decides to rape Alison to fulfill his part of the bet. Jason and Cassidy strike up a relationship as Patrick is left unsatisfied and angry. Attempting to seduce Cassidy, she blatantly rejects him. After convincing Cassidy that the man she loves, Jason, is only staying with her because he wants to win the bet with Patrick that they had set, which was to see who could sleep with Cassidy first. Seemingly angry with Jason, she succumbs to Patrick. Jason walks in on them later after they have sex and questions the situation. Cassidy replies that if he were to choose between her and Patrick, and he chose Patrick, then he won. Patrick snidely remarks that both Jason and Cassidy had been victims to his cruel game to show them that they underestimated the evil in themselves. When asked if he had ever been a victim, he tells them no, in which Cassidy reveals that this had been her plan all along. She had begun the little charade for Patrick and Jason to seduce Alison and Sheila, and before she had slept with Patrick, she had taken one of his sleeping pills, planning to tell the policemen that he had drugged and raped her. Patrick is then taken away by the police, bewildered by the cunning of the seemingly innocent people around him.