I started but aborted this when it came out, and I have no idea why. I loved the Themis files (although I don't remember buying book 3). Here, I almost enjoyed the afterword and the relating of the real world facts and figures more than the story: I suspect that's because the age-old good versus evil via your offspring trope has been done to death, so no matter how skilled (and Neuvel is clearly very much that), can lift the idea in my mind.

still, the humour works, you really want to see them succeed. Looking forward to book 2.