It's not just that, I think it's a faith affirming concept. Plus, if you like that sort of thing, this will be one of the best books you'll ever read. A compliation of 5 case studies that actually occurred. Names & places changed. Absolutely heart wrenching, but it raises some many questions and provides some interesting, and unexpected, answers to questions concerning the interaction between this world and the divine.
I gave it out as a Christmas present one year. Everyone thanked me after they read it. When they opened it, they gave me openly hostile looks.
Hostage to the Devil