This Present Darkness (Darkness, #1)

by Frank E. Peretti

Deception was the proudest, haughtiest demon of them all, very arrogant in his supposedly superior knowledge of how to control men’s minds. His appearance was not even as gruesome as the other demons; he almost looked human. His weapon, he boasted, was always a compelling, persuasive argument with lies ever so subtly woven in.

It was the worship and the prayers of these saints that had called them here in the first place.