Possibly FEAR NO EVIL (1981) as well...which had a lot of rock music on the soundtack. (including the Ramones and the Sex Pistols!). IHe is the anti -christ...on his 16th Birtday he starts to get more powerful. He tricks some teens into going out to a local island with an old gothic castle on it...and takes his revenge. Fun movie! I first saw it on Showtime years ago...I have it on vhs now.