Riordan has done it again, and I'm very happy he has. This book (and series) has the same premise as the Percy Jackson and Heroes of Olympus series, there are gods from ancient cultures who need the help of 'godlings' to protect the world and their way of life. It's different enough that it provides something new to the world and similar enough that if you loved Percy Jackson there is a great chance you'll love this too. There are even moments where they will mention the Greek/Roman gods, but very vaguely and you'll only get the hints if you've read the other book. The concept of the gods having to use human forms is really interesting and the premise of battle magic avatars is pretty much awesome. On a side note I am so thankful that someone finally portrayed Anubis in a positive light, western culture has a nasty habit of making him look evil.Anyway I sincerely look forward to the next in the series.