Movie "Body heat" 1981

This movie is about a seedy lawyer( Ned Racine) that fall in love with a beautiful woman( Matty Walker) that was on vacation offshore of a small town in Florida. A passionate affair commences but it isn't long before they realise the only thing standing in their way is Matty's rich husband Edmund. After a short period together, she convinces him that her husband and mobster, Edmund Walker, is an obstacle for their passion and they have a prenuptial agreement; therefore, he should be eliminated.