I'm looking for the title to a movie I've seen as a kid. It's a horror movie. I don't remember too much about it except that there is a kid who got picked on in high school or college. Well he finds a puppy and the group of kids who have been teasing him end up killing the puppy. He then finds a dungeon or basement and finds some kind of book. The kid becomes evil and at some point I remember the floor opening up and wild boars coming out and killing the kids who teased him or something along those lines. Please help me this has been nagging at me for a few now.

It's Evilspeak (http://www.imdb.com/title/tt0082346/) from 1981.