The possessed son never changes his costume and is never seen to be battling anything important. It would seem to be truths hidden which by his possession are revealed. Unfortunately, mom's (Adrien Barbeau) suicide, at a family picnic of all things for all to witness, was surreal to say the least. Everyone just stood there and watched her hang herself. You'd have thought they were all filming it on their phones. No one made a single move to save her!
The mention that the movie is based on facts doesn't surprise me a bit. Child molestation, whether at the hands of a family member or a priest, is very much a real-world problem. So bad acting or not, it's a hard act to follow. The fact is, true evil is all around and no one wants to admit it much less confront it. The movie takes the concept of a well-to-do family with close ties to "the church" yet all the characters act like they just met. It's a sort of hodgepodge cast with a very hard to confront plot. The son's (played by Tobin Bell) possession, IS the plot. The producers tried hard to show this without spending a gazillion dollars on-screen to do so.
Most reviewers hated this movie simply because it did not give them what they wanted, entertainment. That alone seems to me the problem with people in general. They do everything as if they should be rewarded in some way and if they aren't, they attack or denigrate their own expectations. Hard to watch because it's simply hard to imagine it as something that could actually happen to an outwardly perfect bunch of people in a family whose kids go to a Christian school in a beautiful neighborhood (Thousand Oaks).
The Lord's classroom is truth to behold. Lies are the devil's work and will beget only destruction. The ending held all the special effects in a very impromptu exorcism, which of course worked. If you ever ask whether or not there is both good and evil, surely you can meet the devil. That is truth, but more importantly one you should all be too aware of. Good Lord Above.