The story concerns a deeply cynical and jaded reporter and photographer named Richard Dees, who works for a fictional tabloid magazine called The Inside View. Dees' current subject of investigation is the Night Flier, an individual who travels between small airports in a Cessna Skymaster, gruesomely killing people in a way that leads Dees to think the man is a lunatic who believes himself to be a vampire. After only a few days of interviewing witnesses and following the killer's trail in his own Cessna, Dees overtakes the Night Flier during a violent thunderstorm at Wilmington International Airport, and quickly learns that he is badly mistaken about his would-be quarry: it is, indeed, a vampire that is doing the killings. After Dees watches the Night Flier casually empty the bloody contents of his bladder into an airport urinal (or as much of this act as he can see reflected in a mirror), the creature warns off his "would-be biographer", destroys his photographic evidence, and leaves the mortally-shaken reporter amidst a scene of carnage to be arrested by the police.

 
http://www.imdb.com/title/tt0119784/