We return to the same world as in the Covenant of Steel books. Whilst that's my least favorite series of Anthony Ryan is this a lot better series. What I disliked about the Traitor and the other covenant of steel books was their perspective and how they where written. I have no such problems in this book, and it makes this a lot more enjoyable to read in my mind. It builds on the fantastic world from the other books and expands it and it have a lot of interesting new characters.