The early scenes give promise of an entirely different comedy. Aaron Johnson has a certain anti-charm, his problems in high school are engaging, and so on. A little later, I reflected that possibly only Nic Cage could seem to shoot a small girl point-blank and make it, well, funny. Say what you will about her character, but Chloe Grace Moretz has presence and appeal. Then the movie moved into dark, dark territory, and I grew sad.