Third Degree Burn (1989)

Scott Weston is a private investigator who is supposedly hired by a rich businessman to determine whether or not his beautiful wife is fooling around behind his back. During the course of his investigation Weston begins his own steamy affair with the wife. The husband then turns up dead and Weston becomes a prime suspect. Did he do it? Has he been set up? Or is he the victim of a third degree burn?