I heard this book being reviewed on Radio 2, Simon Mayo show and was facinated by such an odd sounding story concept. I read this on holiday and found it perfect for just losing yourself in the story. The knowledge of London is great and really brings the city to life. The characters are likeable and interesting and the story itself is an engaging read. Fantasy mixed with real life. Loved it - can't wait to read the next one. If you love crime and/or fantasy this is a book for you.