Endgame is the seventh episode in Season Seven of NCIS.
The episode is the 145th of the series and also concludes the storyline that first began in the NCIS: Los Angeles Season 1 episode, Killshot (NCIS:Los Angeles) (episode).
The body of a doctor is found in a park in D.C. and the NCIS Major Case Response Team are summoned to the scene to investigate. It appears to be a normal investigation but things change when much to the team's surprise, Director Vance personally arrives at the crime scene and informs that the team that the killer they're looking for is someone he's been hunting down for the last twenty years....
In the bullpen, as photos of Lee Wuan Kai grace the monitor, McGee reading from a file reveals that Lee Wuan Kai who is a North Korean assassin and one time fanatical nationalist has been credited with 27 targeted hits in seven countries and dozens more by associate.
- Abby makes a reference to Eric Beale who is a Tech Operator with the Office of Special Projects and also one of the main characters in the spin-off series, NCIS: Los Angeles.
- There is also a reference to the NCIS: Los Angeles Season 1 episode, Killshot (NCIS:Los Angeles) (episode) which began the storyline that concludes in this episode.
- This episode was credited as an NCIS episode and as such does not appear in the Season 1 Box Set of NCIS: Los Angeles.
|Leroy Jethro Gibbs||Mark Harmon||Special Agent in charge of the Major Case Response Team, NCIS.|
|Anthony DiNozzo||Michael Weatherly||Senior Special Agent, MCRT, NCIS.|
|Ziva David||Cote de Pablo||Junior Special Agent, MCRT, NCIS.|
|Abigail Sciuto||Pauley Perrette||Chief Forensic Specialist, NCIS.|
|Timothy McGee||Sean Murray||Special Agent, MCRT, NCIS.|
|Leon Vance||Rocky Carroll||Director of NCIS.|
|Donald Mallard||David McCallum||Chief Medical Examiner, NCIS.|
|Guy Ross||Kent Shocknek||Shocknek previously appeared as Ross in episode Model Behavior (episode) and Murder 2.0 (episode).|
|Jackie Vance||Paula Newsome||Wife of Director Vance.|
|Chad Dunham||Todd Lowe||NCIS Special Agent.|
|Lee Wuan Kai||Kelly Hu||Assassin with connections to Director Vance. Killed by Jackie Vance.|
|Amanda Barrow||Lindy Booth||McGee's new love interest who is actually an assassin that the North Koreans tasked with killing Lee Wuan Kai.|
|Cadet Clay Waring||Theodore Perkins||Cadet United States Military Academy.|
|Midshipman Alex de la Pena||Leonard Wu||Midshipman, United States Naval Academy.|
|Joanne Torrence||Penny Johnson Jerald||An official with the State Department.|
|Linda DeMarco||Alla Korot||A nurse.|
|Navy Shipman||David Rivera||A man who appears in the episode.|
|Navy Runner||Michael Lawrence||Uncredited role.|