• Source: NCIS season 21

The twenty-first season of the American police procedural television drama series NCIS was announced on February 21, 2023, by CBS, and premiered on February 12, 2024, and concluded on May 6, 2024. This is the first season not to feature David McCallum (as Dr. Donald "Ducky" Mallard), who died on September 25, 2023, though he is still posthumously credited in the first two episodes. Due to the 2023 Writers Guild of America and SAG-AFTRA strikes, the season consists of only 10 episodes, the smallest number in the show's history, shorter even than season 18, which was shortened due to the COVID-19 pandemic in the United States. This season also includes the 1,000th episode of the entire NCIS franchise, which aired on April 15. The previous season finale and this season's premiere episode were broadcast nine months apart, making it the longest break in the series's history.
On April 9, 2024, CBS renewed the show for a 22nd season.




Premise


NCIS revolves around a fictional team of special agents from the Naval Criminal Investigative Service, which conducts criminal investigations involving the United States Navy and Marine Corps. Based at the Washington Navy Yard in Washington, D.C., the NCIS team is led by Supervisory Special Agent Alden Parker, an ex-FBI Special Agent and a skilled investigator.




Cast and characters






= Main

=
Sean Murray as Timothy McGee, NCIS Senior Special Agent, second in command of MCRT
Wilmer Valderrama as Nick Torres, NCIS Special Agent
Katrina Law as Jessica Knight, NCIS Special Agent
Brian Dietzen as Dr. Jimmy Palmer, Chief Medical Examiner for NCIS
Diona Reasonover as Kasie Hines, Forensic Specialist for NCIS
David McCallum as Dr. Donald "Ducky" Mallard, NCIS Historian and former Chief Medical Examiner (episodes 1–2; credit only due to McCallum's death in 2023)
Rocky Carroll as Leon Vance, NCIS Director
Gary Cole as Alden Parker, Supervisory Special Agent (SSA) of the Major Case Response Team (MCRT) assigned to Washington's Navy Yard and former FBI Special Agent.




= Special guest star

=
Michael Weatherly as Anthony DiNozzo, former NCIS Senior Special Agent




= Notable guests

=
Joe Spano as Tobias Fornell, Private Detective and former FBI Senior Special Agent
J. Claude Deering as Curtis Hubley, NCIS cyber tech
Al Sapienza as Maurice Riva
Kim Matula as former FBI Agent Rose
Michael Garza as Reymundo De Leon
Chris Petrovski as Lev Trotski
David Starzyk as Allan Berger, US councilman
Chris McKenna as Eric Webb, former NCIS agent turned CIA agent
Jake Thomas as Derek Bailey, Navy Petty Officer
Russell Wong as Feng Zhao, NCIS Special Agent in Charge and Knight's father
Margo Harshman as Delilah Fielding-McGee, DoD Intelligence Analyst and McGee's wife
T. J. Thyne as Fletcher Voss, CEO of Bandium
Christina Kirk as Dr. Clara Logan
Tim Russ as Dr. Erik Harper
Alastair Duncan as Ron Davenport




= Crossover

=



NCIS: Hawaiʻi


Vanessa Lachey as Jane Tennant, NCIS Special Agent in Charge



NCIS: Los Angeles


Daniela Ruah as Kensi Blye, NCIS Special Agent




Episodes






Production


On February 21, 2023, NCIS was renewed for a twenty-first season, which premiered on February 12, 2024. The production of the season was delayed due to the WGA and SAG-AFTRA strikes in the United States.
David McCallum, who played Dr. Donald "Ducky" Mallard in the show's first 20 seasons, died on 25 September 2023. The second episode of the season paid tribute to him with various clips from past episodes to celebrate Ducky's life and memories with the team, as well as the appearance of former cast member Michael Weatherly, with DiNozzo showing support to Palmer moments before the funeral.
On January 5, 2024, it was announced that NCIS: Los Angeles star Daniela Ruah would be directing an episode this season, later revealed to be episode 4, titled "Left Unsaid".
On March 14, 2024, it was revealed that both Ruah and Vanessa Lachey would make an appearance as Kensi Blye and Jane Tennant, respectively, in the 1,000th overall episode of the franchise, though neither Kensi nor Jane appeared “in person” alongside the D.C. team.




Ratings






References

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• NCIS (seri televisi)
• NCIS: Los Angeles
• Lucas Black
• This is Us (seri televisi)
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• Eat, Pray, Queef
• Modern Family
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• Law & Order: Special Victims Unit
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• NCIS season 21
• NCIS season 22
• List of NCIS episodes
• NCIS season 19
• NCIS: Origins
• NCIS season 4
• NCIS season 18
• NCIS (TV series)
• NCIS: Los Angeles
• NCIS: Hawaiʻi season 3