User by Bruce Benderson

Orignially published in the States in 1994, this is the first UK publication.  A hard-edged look at the seamy underside of New York City follows the travels of Apollo, a heroin addict hiding out from Casio, a porn theater bouncer, bringing to unforgettable life the world of prostitutes, transvestites, and other denizens of the night.
 
This is a world filled with stark, hypnotic eroticism and mined with terrors peculiar to the subterranean city in the hours after midnight.