Instead of Damning the Darkness, It's Better to Light a Little Lantern" - Crossing the border to Mexico means the start of an exciting spring break, but crossing the line may mean the end of it in an all-new episode of 'Switched at Birth,' airing Monday, September 21st on ABC Family. Daphne, Bay and Travis celebrate spring break with a volunteer trip to rural Mexico with Melody to distribute hearing aids to underprivileged locals. However, lines are crossed when Daphne makes an unexpected connection with a fellow volunteer and Bay's passionate anger toward Emmett gets the better of her. Meanwhile, Melody's boyfriend surprises her with a life-changing idea.