Switched at Birth 4×10 “There Is My Heart” – Bay fights for her relationship with Emmett in the Spring finale of “Switched at Birth,” airing Tuesday March 10th on ABC Family. Intent on making their relationship work, Bay surprises Emmett with a visit to Los Angeles while he’s shooting his first big class project. Daphne is distraught with her performance in school and the idea of letting Bay and her family down. Kathryn and Toby get the chance to have their musical produced. Meanwhile, Regina is shocked by Eric’s reaction to a buyout offer on the coffeeshop.