Death by Hollywood - Steven Bochco

One evening, spying on his Hollywood Hills neighbours through his $4,000 electronic telescope, Bobby witnesses a beautiful woman making love to a handsome Latin actor called Ramon. As their pillow talk turns ugly, Bobby watches in horror as the woman appears to bludgeon her lover to death with his own acting trophy. Instead of rushing to the cops, Bobby decides to find out more about the events that led up to the crime, and to use the material for his next movie screenplay. However, when he sneaks into the actor's apartment, the discovery he makes changes his life forever. Empowered by his secret knowledge, Bobby is able to seduce the beautiful woman, while forging a unique friendship with Detective Dennis Farentino, the cop in charge of the investigation. Before long Bobby has dragged the detective, his wife, his lover, and his agent into a Hollywood fun-house hall of mirrors, where only the most manipulative player will survive.