Hello Mary Lou: Prom Night II (1987) is a Horror, Fantasy, Thriller film that follows when Hamilton High’s Prom Queen of 1957, Mary Lou Maloney, is killed by her jilted boyfriend, she comes back for revenge thirty years later. Currently, you can watch Hello Mary Lou: Prom Night II on Amazon Prime Video, fuboTV, Amazon Prime Video with Ads, Amazon Video. Streaming availability may vary by country and platform over time. It has a user rating of 6.1 out of 10 from 216 votes. Fans of horror movies may also want to explore similar titles below.