City and the City by China Mieville

Excellent book. Can't quite decide what category it should be placed in, does it belong in crime or Fantasy? The story is impressive and I do not want to describe it in any way as I think it takes away from the enjoyment of this particular book. It takes a while to figure out what is going on and I think part of the charm of the book is the slow dawning of understanding.
certainly one of his best works. China is getting better and better.