Neverwhere

Full review at http://bookwi.se/neverwhere-by-neil-gaiman/

Short review: Gaiman is a wonderful author. This is the story of an regular guy that falls through the cracks of London into London Below, where everything and everyone that doesn't quite fit or isn't really wanted ends up in London Below.

This is a quest book. And like most quest books, there is some treachery and things are not really what they seem. But it is good, the characters are well developed and memorable.