A popular radio disc jockey, Dave Garver, repeatedly receives on-air requests from a sultry female fan asking to play the song "Misty" for her. When the woman, Evelyn Draper, orchestrates running into Dave at his favorite nightspot, the two begin a torrid affair. However, when Dave decides to end the relationship, Evelyn's obsession quickly turns violent. Soon, Dave's life, and everyone in it, becomes a target for Evelyn's increasingly deadly reign of terror. © 1971 Universal Studios. All Rights Reserved.