Hugh Grant plays against type as a creepy arbiter of a horrific escape room where he mansplains to two female Mormon missionaries the limits of faith in Bryan Woods and Scott Beck’s Heretic (B-). It’s a strange little movie, ostensibly in the horror genre but often so talky and obtuse that it might as well be a three-hander play. Chloe East and Sophie Thatcher are superb and highly believable as their characters negotiate with the man who may be their captor. They make realistic moves and are whip smart against a crafty antagonist. As “Mr. Reed,” Grant leverages his romcom charm to diabolical effect; his character may be a bit more cultured than boogeymen in Halloween or hockey masks, but he’s just as intense. The film is an exploration of the lore and belief systems of religion, powered by a smart premise and solid acting, and makes for an intriguing watch. But those expecting wall-to-wall thrills will likely find themselves underwhelmed.