VIDEO: Sneak Peek - Tonight's Season Finale of CBS's NCIS

On the Season Finale of CBS's NCIS, the international manhunt for Eli David and Jackie Vance's killer turns into a federal witch hunt against Gibbs and the team, which questions their unconventional methods and threatens their future at the agency.

The 10th season finale airs Tuesday, May 14 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Guest stars include Colin Hanks as Department of Defense IG Investigator Richard Parsons, Muse Watson as Mike Franks, and John M. Jackson as Rear Admiral AJ Chegwidden. Get a sneak peek below!

NCIS (Naval Criminal Investigative Service) is more than just an action drama.  With liberal doses of humor, it's a show that focuses on the sometimes complex and always amusing dynamics of a team forced to work together in high-stress situations.  NCIS Special Agent Leroy Jethro Gibbs, a former Marine gunnery sergeant whose skills as an investigator are unmatched, leads this troupe of colorful personalities.  Gibbs, a man of few words, only needs a look to explain it all.