Jane Austen’s Emma gets a thoroughly modern treatment from Masterpiece this Sunday: A Twitter party. During the premiere of episode one, 9-11 p.m. Eastern, Austen experts and insiders from PBS and Masterpiece will be tweeting along with fans. Participants have a chance to win a prize, too. Use hashtag #emma_pbs. The three episodes of Emma run through Feb. 7. UPDATE: And the prize will be . . . a Jane Austen action figure!