Sundance’s Midnight section always includes a fair share of genre-heavy selections, but Richard Bates Jr.’s Excision sounds like it will pack a level of blood and guts rarely seen at the festival. A twisted coming of age tale, Excision follows young Pauline (AnnaLynne McCord), a high school girl with an unabated interest in picking scabs, dissecting road kill, and fantasizing about performing surgery on strangers. Bates’ debut seems to be the sort of grotesque horror comedy sure to play well to splatter-enthusiasts in Park City and beyond. Filmmaker: You’re premiering at a festival not traditionally known for its horror selections. […]