“Heretic” opens with an unusual table setter: Two young missionaries from The Church of Jesus Christ of Latter-day Saints are discussing condoms and why some are labeled as large even though they’re all pretty much a standard size. “What else do we believe because of marketing?” one asks the other.
That line will echo through the movie, a stimulating discussion of religion that emerges from a horror movie wrapper. Despite a second-half slide and feeling unbalanced, this is the rare movie that combines lots of squirting blood and elevated discussion of the ancient Egyptian god Horus…