The Substitute 3

Treat Williams plays Karl Thomasson, a mercenary who poses as a professor to get justice for his old Army buddy's daughter. The young woman he comes to the rescue for is a college student who is brutally attacked by some of the school's sick football players, who also happen to be hopped up on steroids distributed by their equally disturbed coach. Treat handles the coach's drug dealing and gambling issues and seeks revenge for his friend's daughter in the best way possible - by using his brains and brawn.