It started so well with an interesting premise and then just went downhill the whole time.
The super tough priest, who could have rocked the show as a badass underdog devil killer, turns out to be a big punching bag who has to be rescued endlessly from trivial situations. There are huge gaps in the story leaving you asking "how did that happen?". Characters flip flop in and out of character in an attempt to try to move the story along. And finally, the ending, if god forbid you make it that far, is so dumb its both unbelievable and completely in keeping with the trendline of the show.