NCIS season 20
season of television series

The twentieth season of the American police procedural television series NCIS premiered on September 19, 2022 on CBS during the 2022–23 television season, and concluded on May 22, 2023. This is the first season not to credit Mark Harmon who had portrayed Leroy Jethro Gibbs since the show's first season, and the last to feature David McCallum prior to his death on September 25, 2023. This season includes the 450th episode of the series. The season contains 22 episodes.
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, Acting Director of NCIS
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
Rocky Carroll as Leon Vance, NCIS Director
Gary Cole as Alden Parker, NCIS Supervisory Special Agent (SSA) and Team Leader of the Major Case Response Team (MCRT) assigned to Washington's Navy Yard, former FBI Special Agent turned NCIS's agent
Notable guests
Crossover
NCIS: Hawaiʻi
NCIS: Los Angeles
Episodes
Production
Development
On March 31, 2022, NCIS was renewed for a twentieth season, which premiered on September 19, 2022.
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