Mistress Vol. 6, The. Derrick blew up his first marriage by cheating on his wife. 3 years later he married his mistress (Lexi Stone) and vowed to be a one woman man from then on. Everything was fine until his son (Tyler Cruise) brought home his beautiful new girlfriend (Kay Lovely) to meet the family and those old familiar feelings came rushing back. Now Derrick has to make a decision between betraying his wife and son or keeping his promise to be faith...