‘NCIS’ Showrunner Breaks Down Season 21 Finale: Is Knight Leaving the Show?

Note: This story contains spoilers from the “NCIS” Season 21 finale.

“NCIS” wrapped up Season 21 with a high-stakes murder investigation, an underwater rescue mission and one of its agents accepting a new job on the opposite coast.

Episode 10, “Reef Madness,” followed the team’s investigation of the murder of three victims whose bodies were found aboard an old Navy ship that was set to be turned into an artificial reef. The start of the episode also featured Vance (Rocky Carroll)...