NCIS: SEASON 23

In Season 23 of NCIS, the team faces personal and professional challenges, from Parker's (Gary Cole) family tragedy and a race to stop a fugitive, to cases involving blackmail, undercover rescues, and secret societies. Loyalties are tested, secrets revealed, and new alliances formed as the agents confront danger, loss, and shifting relationships throughout the season. Co-starring Sean Murray as McGee, Wilmer Valderrama as Torres, and Katrina Law as Knight, this season also features guest stars LL Cool J as Sam Hanna and Nancy Travis as Parker's sister, Navy Vice Admiral Harriet Parker.