Body Double

Struggling, intensely claustrophobic actor Jake Scully (Craig Wasson) spends his spare time spying on an always-undressing beautiful woman while house-sitting at his friend's swanky Los Angeles bachelor pad. Then he notices a big ugly guy with a power drill is also spying on her, and Scully begins trailing them in a bizarre game that eventually leads to murder. To solve the mystery, Scully infiltrates the porn industry and stars in an X-rated video for 1980s band Frankie Goes to Hollywood, eventually linking up with adult film star Holly Body (Melanie Griffith), the key to all the strange goings-on. (official distributor synopsis)