It's been so long since our last trip to Downtown Abbey that our fond memories of the Crawleys are fading into nothing but distant whispers (with British accents!). Was there an engagement of sorts? Who's knocked up? And whatever happened to Bates? If you, too, are suffering from Downton amnesia, let us refresh your memory -- and share some exciting scoop on Season 3, which kicks off Sunday at 9/8c on PBS.