Book 7: Angelopolis. The sequel to Angelology, taking us a little further in to that story. However, it was more of a thriller and maybe trying to do too much? We didn't get to know any of the characters much better and while the plot was complex and fascinating, a lot of it was told with one of the characters monologuing to the other characters who are often injured or tired or in a hurry. I liked it but was not surprised it didn't have a sequel despite an ending that implied one was coming.