A woman's sister pays a PI to check into her fiancee's background to break up marriage and when he fails to show at the alter, the bride hires him to find out why.  Good morality story on many levels as its fraught with questions of situational ethics.  Should he work for the second sister, whether the client's best interests or sticking to his job is proper, and his plan to win her away for her protection. Its all well acted and because she is attractive, not far-fetched that he'd be interested or that she'd question his integrity.