Brad Fraser's noir world of sexual conquest and serial killers meets its perfect match in staging this week, when the Raleigh Ensemble Players puts on Unidentified Human Remains and the True Nature of Love (pictured) at Legends, Raleigh's alternative night spot. A glorified men's locker room with pounding beats and a dangling disco ball, Legends will give new immediacy to the story of a former child TV star named David, who cruises the streets of Edmonton, Alberta, offering and receiving sexual favors from strangers. David's got a roommate named Candy, who was his former lover and who is now trying to decide whether to accept the advances of Jerri, a lesbian fitness buff, or Robert, a cute bartender. Add to all this love-confusion a succession of brutal murders (hence the title--"unidentified human remains" are what's left after the killer is done mutilating his victims), and you've got a plot that's darker than the darkest corner of Norman Bates' basement. Tickets for the 8 p.m. showings on Dec. 6-8 are $25 for the general public, $15 for REP season subscribers. No one under 17 admitted without a parent or guardian. Call 832-9607 for details.