SEASON FINALE: The ending of Season 3 is full of colliding subplots, including Snow White’s new baby, the Wicked Witch’s new evil plan, and a spell that sends Emma (Jennifer Morrison) and Hook (Colin O’Donoghue) back in time, with full awareness of their “present” selves, to what looks like a royal gala. And lately, on TV, royal galas seem to be cause for anything but celebration.