Jack Quaid in Novocaine . Photo: Marcos Cruz/Paramount Pictures/Everett Collection Novocaine could have been written by a 12-year-old, and I’m not sure I mean that pejoratively. It’s a riff on superhero stories, but it’s been thought up with a whiff of dopey plausibility: The film’s protagonist, Nathan Caine (Jack Quaid), suffers from something called Congenital Insensitivity to Pain with Anhidrosis (CIPA), which is a real condition that probably doesn’t work quite as conveniently as it does