Like a real-life version of the 2010 Greek film "Dogtooth," six boys and their little sister weren't allowed to leave their drab New York City apartment for almost all of their young lives thanks to their parents' rules. First-time director Crystal Moselle certainly stumbles onto a fascinating story for her doc "The Wolfpack," and she doesn't waste it either, absorbing the viewer into a bizarre and often unsettling psychological experiment playing out right in reality.