This was John Carpenter's first foray into TV land. Although reeking of the 70's, it is hands down one of the better dark suspense films. I'll even go so far as to say that this movie did for tv dark suspense what the original Halloween did for theatrical horror.
Lauren Hutton (Once Bitten, Fear), at a new job and apartment building (aptly named Arkham Towers) is tormented by a Peeping Tom who knows her every move. First, he sends her presents, then proceeds to the obligatory phone calls. Although Hutton does a good job playing the victim, she isn't totally defenseless--on a few occasions she grabs kitchen knives and plunders into the dark. There's also plenty of P.O.V. sots of the "watcher". In a scene in which he's repeatedly calling her on the phone, the viewer is shown an extreme close-up of part of his face. When the film cuts back to Hutton's apartment, the camera pans down to show that there's a microphone concealed beneath her kitchen table.
The only person who truly believes that someone is watching Hutton is co-worker Adrienne Barbeau (The Fog), and the "watcher" has the nerve to kill her off. David Birney, who plays Hutton's love interest, says he also believes her, but his performance comes off as remarkably ineffectual. At one point, Birney looks to be a likely suspect for her torments. When the final confrontation with the killer occurs in Hutton's apartment, with an ending that's fairly predictable, Carpenter puts a slight twist on the Hutton character, making her seem almost as cold as the watcher/killer. After a brief struggle, he falls out the window, plummeting to his death. Hutton looks down and says, almost offhandedly, "He got too close."