Nicolas Cage is Peter Loew, a New York literary agent who works hard and plays hard. Only indication that all is not OK are his sessions with his shrink (Elizabeth Ashley). One night his latest pickup (Jennifer Beals) exposes her fangs. She keeps him alive so that she may continue to feed. As a result he starts getting the urge for blood himself, becoming even more manic at work and taking it out on his beleaguered secretary (Maria Conchita Alonso).
The film then takes a major U-turn, suddenly getting deadly serious as it appears that Loew is not turning into a vampire at all, but is becoming a full-blown psychotic. Latter portion of the film shows him raping, murdering and pleading with people to kill him.
Problem is that Cage’s over-the-top performance generates little sympathy for the character, so it’s tough to be interested in him as his personality disorder worsens. The supporting cast is given little to work with, as Alonso mostly cowers and Beals mostly bites Cage. Ashley fares best as the psychiatrist, particularly in a fantasy sequence at the end in which she tells Cage’s character what he wants to hear.