There's this guy who's wife is cheating on him with a cop, so he murders her and the first one to the scene is the cop she was cheating with and he confesses. Then when everyone else gets there he pleads guilty and plays everything so well that he eventually gets away with it.
I can't think of the title or any of the actors but I want to watch it again because i remember enjoying it and now its bugging me. +K for whoever knows.