The Law & Order district attorney's office briefly went blonde, but now it's going back to brunette. NBC has announced that Annie Parisse will be the new assistant prosecutor on the show, replacing Elisabeth Rohm, who's leaving the series mid-season after three and a half years on the show. (She announced earlier this year that she's departing to focus on a film career.) Parisse, who can be seen on-screen as Agent Dawes in the current box-office champ National Treasure, will serve alongside Sam Waterston's Jack McCoy, following such prosecutorial sidekicks as Jill Hennessy, Carey Lowell, and Angie Harmon. Her other credits include a three-year stint as Julia Lindsey Snyder on As the World Turns and a supporting role opposite Kate Hudson in How to Lose a Guy in 10 Days. Now, she'll have to learn how to win a case in 25 minutes.