Rivers of London

 So...what is it about? Well, imagine being a young mixed-race copper in London, about to get posted to a dull dead end existance shuffling paper, while your glamourous almost-girlfriend gets a plum posting...and then a ghost gives you a tip-off and you discover a whole new world. This is a London of spirits and ghosts, groaning under the weight of history and geography. And someone is commiting murder by magical possession.