This was an interesting fantasy. It's about a world called London Below with all sorts of people and creatures that the people in actual London can't see. A common Londoner, average guy, ends up in the middle of war/quest type scenario. This other world is pretty cool. It's made up of rats and lesser beautiful creatures than are often in fantasy stories; although, there is an angel, a slumming angel. Also it isn't a save-the-world romance like a lot of the fantasies I've read. I enjoyed it. I checked it out because of the author. I didn't know there was a show of it too.