NCIS Database
NCIS Database

NCIS Season 19 premiered on September 20, 2021.


Name Portrayed by Role Notes
Leroy Jethro Gibbs Mark Harmon NCIS Special Agent in Charge. Resigned.
Episodes 1–4 only
Timothy (Tim) McGee Sean Murray NCIS Senior Special Agent who is currently in charge of the NCIS Major Case Response Team.
Nicholas (Nick) Torres Wilmer Valderrama NCIS Special Agent.
Jessica Knight Katrina Law NCIS Special Agent.
James (Jimmy) Palmer Brian Dietzen Chief Medical Examiner. Former Medical Assistant.
Kasie Hines Diona Reasonover NCIS Forensic Specialist.
Donald Mallard David McCallum NCIS Historian Former Medical Examiner
Leon Vance Rocky Carroll Director of NCIS.
Alden Parker Gary Cole FBI Special Agent. Episode 2–

Cast notes[]

  • On Tuesday, June 22, 2021, it was announced that Gary Cole (Alden Parker) had joined the series where Mark Harmon (Leroy Jethro Gibbs) is reducing more episodes and Katrina Law (Jessica Knight) had been promoted to series regular and that she was the replacement for Emily Wickersham (Eleanor Bishop).[1]
  • David McCallum (Ducky Mallard) is now credited before Rocky Carroll (Leon Vance), as well as receiving a "with" billing. Gary Cole (Alden Parker) now receives the "and" billing.
  • After 19 years, Mark Harmon (Leroy Jethro Gibbs) departs the series after the fourth episode as a series regular.


  • On April 15, 2021, the main series has renewed for 19th season.[2]
  • This season will be the first time to show on Mondays instead of Tuesdays and at 9:00 instead of 8:00.
  • This is Mark Harmon (Leroy Jethro Gibbs) final season and has exited after nineteen seasons, respectively.


Episode Number Production Title Airdate Summary
Series Season Code
415 1 1901 Blood in the Water (episode) September 20, 2021 As the team searches for Gibbs after wreckage from his boat is discovered, they find out he was tracking a serial killer with journalist Marcie Warren, who wrote an exposé on him.
416 2 1902 Nearly Departed (episode) September 27, 2021 While trying to find the serial killer Gibbs was after, the team discovers another person has been tracking the case as well.
417 3 1903 Road to Nowhere (episode) October 4, 2021 Gibbs and Parker go on a road trip to find one of the serial killer's victims. Also Knight goes undercover at a large manufacturing company with ties to the murders.
418 4 1904 Great Wide Open (episode) October 11, 2021 Gibbs and McGee head to Alaska while the team works at home to uncover the conspiracy behind the serial killer.
419 5 1905 Face the Strange (episode) October 18, 2021 The team investigates the death of a Navy commander whose body suddenly explodes before Jimmy can examine it.
420 6 1906 False Start (episode) November 1, 2021 The team investigates the death of a beloved Navy commander who trained some of the top athletes in the country.
421 7 1907 Docked (episode) November 8, 2021


  v - e - d Seasons of NCIS
NCIS Season 1NCIS Season 2NCIS Season 3NCIS Season 4NCIS Season 5NCIS Season 6NCIS Season 7NCIS Season 8NCIS Season 9NCIS Season 10NCIS Season 11NCIS Season 12NCIS Season 13NCIS Season 14NCIS Season 15NCIS Season 16NCIS Season 17NCIS Season 18NCIS Season 19