I saw this movie when I was about 10 years old on an episode of Shock Theater that aired in Georgia. That would have been in the late 70's. I was at an all-girl slumber party, and the last one awake when it came on TV. Talk about a creepy mix of midnight horror at the age of pre-teen sexual awakening. This movie has stuck with me all these years, and has to be one of the more oddly erotic horror movies that I've encountered. I remember John's bedroom being painted red and having a very erotic, yet unhinged feel to it. And the parts with the girls tied up; I was mesmerized. Maybe it just touched the deranged part of myself. ;o)