Zoom Up: The Beaver Book Girl (1981)

After a young woman is viciously assaulted in an abandoned factory building, her attacker runs off, leaving a roll of money. Several years pass, and a photographer who specializes in shooting "schoolgirl panty" photos for the adult entertainment industry meets a sexy but mysterious woman who asks to be his next model. He doesn't know that she has a dark secret, and he may soon find out more about it than he would want to know.