Christine and Sam reunite this week — which is a good thing, because they're still recovering from the panic of Caleb being poisoned. While they try to figure out where the heck Ezra and Alison are, whether or not Nicole has good (or at least innocent) intentions, and how Aria became an expert computer hacker in one morning, they celebrate an episode full of glorious Haleb one-liners. Because, really, what else is there to live for aside from Haleb when it seems like the ever-evolving Twin Theory has seemingly come back into play. Does A.D.'s puzzle lead to Spencer's twin? We only have 7 more episodes to find out...