“Law & Order” is back for its 18th season, and promises some cast additions that are sure to add to reinvigorate the aging series.

Not only is “Law & Order” returning mid-season when there won’t be many new television offerings (due to the writers’ strike), but there are a couple of new faces – Jeremy Sisto and Linus Roach – to liven things up.

Sam Waterston’s character, Jack McCoy will be taking over for Fred Thompson’s Arthur Branch at the district attorney’s office, while Jeremy Sisto (“Six Feet Under”) will play Detective Cyrus Lupo and Linus Roache (“Kidnapped”) will play Assistant District Attorney Mike Cutter.