This is a great review and I really enjoy your writing. Good eye on that connection to the Twilight Zone episode-- I'd never seen that one before and you're definitely right that they're similar. I disagree with you slightly though on the idea that the characters were flat or uninteresting. With the exception of Charlie, a character that was really just carried along by her oddness/ creepiness, I found the family really believable, and I thought the actors (especially the mother and son) did a really great job. I think the ending scared the hell out of me precisely because I'd grown invested with the characters, but I can see why it would lose its effect if I had found them less convincing. Anyway, that's just one opinion, and I'll look forward to seeing more of your reviews in the future!