In the new horror movie, “Heretic,” Hugh Grant plays a diabolical religious skeptic who traps two scared missionaries in his house and tries to violently shake their faith. What starts more as a religious studies lecture slowly morphs into a gory escape room for the two door-knocking members of The Church of Jesus Christ of Latter-day Saints, underscoring just how well-suited religion can be for terrifying and entertaining thrill-seeking moviegoers. “I think it is a fascinating religion-related horror as it raises questions about the institution of religion, the patriarchy of religion,” said Stacey Abbott, a film professor at Northumbria University in Newcastle, England, whose research interests include horror, vampires and zombies.