Natural Enemy (1997)

Donald Sutherland is successful stockbroker Ted Robards, who unknowingly hires his wife's (Lesley Ann Warren) son that she had given up for adoption (William McNamara) as his new business partner in the made-for-TV thriller Natural Enemy (1997). McNamara was adopted by an abusive family and has grown into an outwardly normal sexual sadist who has made a vow to find his birth mother and make her pay for his miserable life. Lenore Zann, who plays McNamara's sexually submissive kinky girlfriend, Gina, shows off her rack and rump. That's a natural skin-emy.