I am extremely interested in both the "Falling From Grace" and "Price of a Soul" plot. I have never seen or heard of the book you mention, but the concept you describe sounds rather similar to a plotline I designed some time ago but discarded when no one seemed interested.
I'm off for the night now (work early in the morning) but I'll be back tomorrow evening. If you'd be interested in exploring either of those plot options with me, I'd love to discuss then. :)