I surely can appreciate a bloodless/violent less horror film as The Ring, The Eye, Pulse (the Oriental originals) or The Six Sense, but to be frank, the best examples (and the most remembered classics) are the violent blood feast like Dead or Alive (Jackson), Phantasm (Cascarelli), Exorcist, Evil Dead (1 and 2), later made Oriental with Evil Dead Trap or the legendaries GIALLOS of the 70s and 80s.
Those classics, accumulate blood and body parts, dark aisles, knives and other penetrating objects, violence and sex. The most common elements, was the dark and quite relieving humor involved (often product of their own excess).
The Irrefutable Truth about Demons match that class B style with a class D budget never used better.
The story is more complex and ambiguous than it seems. An anthropologist doctor, whose brother committed suicide after being involved with a Satanic cult, receive a threatening video and later is kidnapped by cult members and attacked by DEMONS. He managed to escape, but his closest friends are killed. A mysterious girl came to his aide, but he refuses to accept her explanations. There is a twist; the guy is also a depressive drug addict. His fuzzy touch with reality make him (and us) doubt about what happening is real or just one of his trips.
During the one night everything happens; the suspense is kept to the max, using decent special efects, excellent use of sounds and background voices, moving shadows and cockroaches (and other insects). Even when the blood is not so much, one scene involving those disgusting insects will probably upset you. Particularly, when you realize that NO SPECIAL EFFECTS WERE INVOLVED.
The end of the movie is not on par with the rest, but there is a final unexpected twist.
A highly recommendable movie that never made an American release but is far, far better than almost every horror flick last year.
