Oscar winner Anna Paquin has been tapped for a key series regular role in the fifth and final season of Showtime’s drama series The Affair, which will introduce a flash-forward storyline. It will center on Alison and Cole’s now-adult daughter Joanie Lockhart, played by Paquin, who returns some years in the future to a climate-change ravaged Montauk to piece together the truth about what happened to her mother and bringing the whole story full circle.