Read: The wheel of darkness
I did not like the plot of Wheel of Darkness. Too much mysticism, too much religion. Everything hinges on one meta-physical entity that is not explained by scientific principles at all. A feature that, otherwise, I did like about the other earlier Preston/child novels. Sure, it was often quite a stretch, here they do not even try. The story's resolution remains completely in the realm of mysticism.
As usual for the author duo Preston and Child this novel is well written, well paced, and unfortunately full of hypocritical moral.