Axioms End

I bought this book solely based on the blurb and first few pages (in a real bookshop). When I got home and saw on here that it's part of a series, I was a little apprehensive. I needn't have been - this book stands on its own, and while the end allows for further volumes, it doesn't end on a cliffhanger or anything. I really enjoyed this, in part because it took some surprising turns, and also because it is intelligently written.