Fans of the wildly popular NCIS will be pleased to learn that Mark Harmon, Pauley Perrette, and Michael Weatherly are already making plans to appear on the show's upcoming spinoff, NCIS: New Orleans. "There's a lot of cross-pollination of the people," said executive producer Jeffrey Lieber during the show's Summer TCA panel. "We're our own thing, but we exist in the same universe." In addition, Rob Kerkovich (Chasing Life) has joined the cast as a morgue assistant named Sebastian. The series, starring Scott Bakula and Lucas Black, will premiere immediately following NCIS at 9 p.m. on Sept. 23, and you can get a peek at the trailer now!