As it follows the twisted path traveled by five people fixated on "The Blair Witch Project," "Book of Shadows: Blair Witch 2" journeys into a dark and dangerous place where the line between truth and fiction blurs and perhaps vanishes altogether. Individual perception grows increasingly untrustworthy as the film's protagonists find themselves caught in a vortex of unspeakable evil, the origins of which -- human or supernatural -- remain chillingly uncertain.