This is the final in the series (I got mine from Australia b/c I couldn't wait for it to be printed in US!). I thought it was a great ending to the series - you don't know who really represents "good" and "evil" throughout and finally find out. Personally, being an agnostic, I found it an extremely interesting take on the origin of the Church, Bible, and church doctrine. Sara Douglass is one of my favorite new authors!
Up to this point I have enjoyed every one of Sara Douglass books that I have read. However, The Crippled Angel was seriously disappointing and not up to par with the other two books in the series. The is almost no character growth, and the ending is transparent from very early in the novel. The final big scene that the whole series had been building to, was actually very anti-climatic. I really wish that this books would have been a more pleasurable read.