A supernatural thriller which has a variation on the myth of the Sirens luring men to their deaths as its premise. An ancient witch has taken over a radio station and is broadcasting late night jazz shows under the guise of a DJ called Night Owl. Harry is a nightclub musician married to speech therapist Julie. As the seductive voice of DJ Night Owl becomes the talk of the town, it becomes apparent that the voice is literally driving men mad. A lab technician at Julie's hospital pierces his eardrums to escape the voice and a friend of Harry's, Alex, throws himself off a roof after hearing the voice in his head. When Harry becomes obsessed with the voice of the night owl, Julie tracks down the supernatural bird of prey.