Some people can't take no for an answer, and by the time you realize how far they'll go, it's already too late. In this video, we explore movies where a fan, a lover, a roommate, or a stranger latches onto someone and refuses to let go, no matter the cost. From a devoted "biggest fan" who holds an injured author hostage in Misery to a radio DJ's one-night stand who won't accept it was ever casual in Play Misty for Me, every story on this list shows how quickly admiration can curdle into obsession.

This list also includes a swimmer whose one mistake spirals into a fight for his life in Swimfan, a teenage romance that turns into a home invasion nightmare in Fear, a college roommate willing to eliminate anyone in her way in The Roommate, and a lonely widow whose kindness hides something far more sinister in Greta. Watch till the end and comment which one felt the most suffocating.