This movie would make my top ten easily except for the propaganda that trotted itself out halfway through, thoroughly trashing the interest. Very few movies manage to do what the first half does, which is to make dialogue-heavy theological discussions interesting and gripping.
Written by The Blaze commentator Steve Deace, the book that inspired this movie focuses on the experience of a prison psychologist who must certify a man as sane before his execution. The man claims to be a demon, which sets up a binary solution set.
Normally, someone claiming to have supernatural properties would be viewed as insane, but the man-demon proves to have knowledge beyond the ordinary, at which point he seems sane, but cerifying him as sane would essentially admit the existence of a supernatural study...