TV Guide provided these casting spoilers for the upcoming Season 2:
Person of Interest has found a villain in hunky English actor Julian Sands (24, Smallville). Sands will play Alistair, a diabolical international adversary who gives Reese a run for his money. So far Sands is only signed for one episode, but producers are hoping to bring him back for more. And the real-life wife of Michael Emerson, True Blood's Carrie Preston, will also return as Finch's former fiancée, Grace, for a special episode that explores the romantic pasts of all the characters.
Person of Interest returns next Thursday, September 27, at 9 pm on CBS.