Voyeur (1985)

A bitter ex-cop, as his life takes a bizarre twist the day, meets a shady lawyer. After being hired to spy on a wealthy and promiscuous socialite he finds himself beyond obsession with this lustful and mysterious woman. As his sexual intensity mounts from watching the socialites smoldering encounters, Robert must sweat it out while watching from afar. Like an animal driven by savage passion, he must finally confront the image of his desire and you get to witness it right along wit him.