“You’re Killing Me” (** out of four) was a tired horror potboiler about a young girl (McKaley Miller) who goes to an elite costume party which soon turns ugly when she finds herself entrapped by a creepy costumer (Brice Anthony Heller) and this subsequently worsens when his sadistic parents (Dermot Mulroney and Anne Heche) show up and tighten the immense screws on her even more. Promising beginning soon sputters as film devolves into a routine rehash of “The Purge” and “Desperate Hours.” Miller (who at times resembles a young Drew Barrymore) is solid in the lead but Heche is wasted in one of her final film roles.