The film drew me in, but then left me cold. The original premise was that a man was trying to drive his roommate mad, just for the hell of it. This plot fails to reach any conclusion, and the movie shifts to a character study of a disturbed young man with Christ-like delusions. The delusions may or may not be real.
The first plot line, which might lead to an eventual comeuppance, or to a final triumph in the cruel and senseless destruction of a human being, would have been much more interesting.