Ellen Page, in her breakout role, plays a seemingly naive fourteen-year-old who arranges to meet an online acquaintance, a magazine photographer played by Patrick Wilson, at his home — only for the encounter to reveal itself as a meticulously planned trap turning predator into prey. David Slade's chamber thriller confines almost the entire film to one house, using tight framing and psychological gamesmanship rather than graphic violence to generate dread. A Sundance sensation that announced Page as a major talent, it remains a provocative, morally uncomfortable entry in the vigilante-thriller genre.