Near Enemy by Adam Sternbergh
David Spademan is good at one thing, being a garbageman, his father was a garbageman and he followed suit, but seeing how the once great city of New York is now basically a memory that has all been wiped out by a "dirty bomb" , he's been reduced to peruse other areas of trash related work. The people that still inhabit the fringe neighborhoods that once surrounded Time Square spend their time locked into a dreamlike virtual reality where anything goes, Spademan still manages to take out the trash, but in the form of a box-cutter to the jugular while creepy perverts who broke an unwritten rule are locked into la la land. Technically there are no rules in this altered reality known as the Limnosphere, so in short, Spademan takes out whomever his clients ask, so long as he's paid in cash. He likes his job, to a degree. But his latest target, Lesser, a fat sloppy bed-hopping pervert who likes to peek in on other people's fantasies sends Spademan down a weird and...