So this is the 6th book in the series I just found out. It's my 2nd book from this author, and I really liked it. I just finished reading Last Oracle by same author in the same series and it was OK, not great, just OK and I decided to give the author and series one more chance. I actually wanted to read a different title in the series, but it was checked out and this one was available so I grabbed it. I really liked it, much better than Last Oracle. I don't think I missed too much by reading the 6th book 2nd. I am now going for a third in the series - whichever one is available at the library first.