Night Eyes (1990)

The rock star Brian Walker's Wife is surprised by her husband shagging another woman in the bathroom in a party. Brian asks for divorce, and Brian hires a security company to spy on her to prove that she is unfaithful and has love affairs. The security guard Will Griffith hides a camera in her bedroom and peeps on Nicky having sex with her lover but he hides the truth from Brian. Will protects Nicky from the violent Brian and they have a love affair. Nicky gets a restraint order against Brian and one night he breaks in the house and Will, who has fallen in love with Nicky, kills him with three shots. Will is prosecuted for the death of Brian, and he finds that Brian apparently was not the responsible for the aggressions to Nicky. Will investigates and discovers the truth about the whole case.