I have a not-final version, so it's probably not quite what will be on the shelves in Waterstones, but it is everything you would expect. And yes, I will be pre-ordering my dead tree copy once I'm home after New Year to receive parcels.

I'm still contemplating how to write the review so that I give an idea of why this is so good without spoilering it. There's a lot of wonderful layering in of clues that as you get to the reveal on various plot strands make you go, "Oh, of *course*".