Neverwhere

Amazing! I don't know how I didn't read this earlier. I am huge fan of urban fantasy and this is certainly a genre defining classic in the genre.

Gaiman did a wonderful job of intertwining the city of London we all know and love with a part hidden from view. It was done in such a way that you are left wondering if maybe that beggar on the street, that empty tram cabin, or that scurrying rat are really signs of something more.