TV highlights: The dome comes down in the 'Under The Dome' series finale

(All times Eastern.)FINALE WATCH: "Boom!" (FOX at 8 p.m.) contestants try to avoid a refried-bean bomb in the show's Season 1 finale.FINALE WATCH: Cat and Vincent do everything within their power to defeat Liam in the "Beauty and the Beast" (CW at 8) Season 3 finale.