I like Tom Holt. I buy him so I have a fun read sitting on the shelf. This book took me extra time and extra work to finish - not that that is a bad thing. I think I started it at Christmas and finished it at Easter. Whew. Many details. So, if you have some free mind-space and some time to read it, have at it. Otherwise, start it on June first and figure it is summer reading. I do read multiple books at the same time, and there is work to do, etc.... So, what's it about? You know alternative realities, other-worlds, fun non-science based ways of tweaking existence. It's all good in the end. I gave it a B+, all in all.