I'm still on the fence on this book. I love a lot of aspects of it, for example, "Mind the Gap" monsters. But by the end of the book, I find that, with the exceptions of Richard and Door, I don't care for any of the other characters. 
 Overall, the book is well written, but there are times it falls flat, for example, Richard's ordeal (The part with Anesthesia's trinket talking to him feels so cheesy). So yeah, I'm still on the fence. I like Neverwhere, but it doesn't make me go, Wow! That's an amazing book!