Wan is a carnival barker at heart, and as a delivery machine for goosing his audience, The Conjuring is primarily intended, like Insidious before it, as a haunted-house attraction, a woozy ride through a hall of goose-bumpy horrors. Except that the film's legitimately tense, competently orchestrated scares aren't so much excitingly old-fashioned as they are tiresomely derivative.