September 26, 2017 (2017-09-26) – May 22, 2018 (2018-05-22)
Season chronology
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List of episodes
The fifteenth season of the American police procedural drama NCIS premiered on September 26, 2017, in the same time slot as in the previous seasons, Tuesdays at 8 PM. The season premiere was watched by 17.42 million viewers,[1] picking up two months after Gibbs and McGee were last seen fighting a group of rebels in Paraguay and focused on the aftermath of those events. The season concluded on May 22, 2018 and contained 24 episodes.
NCIS revolves around a fictional team of special agents from the Naval Criminal Investigative Service, which conducts criminal investigations involving the U.S. Navy and Marine Corps. Jennifer Esposito, who portrayed Special Agent Alexandra Quinn, did not return as a series regular this season. Maria Bello joined the cast as Dr. Jacqueline "Jack" Sloane, NCIS Senior Resident Agent and operational psychologist (episodes 4–24). After 15 years of playing Abby Sciuto, Pauley Perrette left the show in episode 22 - "Two Steps Back." Duane Henry, who plays Clayton Reeves, also left the show as he was killed off in the same episode. CBS renewed NCIS for both seasons fourteen and fifteen on Monday, February 29, 2016.
^Porter, Rick (October 13, 2017). "'This Is Us' and 'The Good Doctor' score big in premiere week broadcast Live +7 ratings". Archived from the original on October 13, 2017.
fifteenth season of the American police procedural drama NCIS premiered on September 26, 2017, in the same time slot as in the previous seasons, Tuesdays...
NCIS stars Mark Harmon as Supervisory Special Agent Leroy Jethro Gibbs, and Gary Cole as Supervisory Special Agent Alden Parker in charge of NCIS' Major...
Tennant, NCIS Special Agent in Charge Daniela Ruah as Kensi Blye, NCIS Special Agent On February 21, 2023, NCIS was renewed for a twenty-first season, which...
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...
The sixth season of the police procedural drama NCIS premiered on September 23, 2008. The new NCIS director Leon Vance (played by Rocky Carroll) became...
pilot of a second spin off from NCIS called NCIS: New Orleans based in New Orleans. Mark Harmon as Leroy Jethro Gibbs, NCIS Supervisory Special Agent (SSA)...
of MCRT, Acting Director of NCIS Wilmer Valderrama as Nick Torres, NCIS Special Agent Katrina Law as Jessica Knight, NCIS Special Agent Brian Dietzen...
The seventh season of the police procedural drama NCIS premiered on September 22, 2009 with NCIS: Los Angeles Season 1 premiering afterwards. At the end...
The ninth season of NCIS an American police procedural drama originally aired on CBS from September 20, 2011, through May 15, 2012. Mark Harmon as Leroy...
is the first season in which NCIS: Los Angeles did not air after NCIS. This season, NCIS: New Orleans aired after NCIS. The entire season eleven cast renewed...
as Anthony DiNozzo, NCIS Senior Special Agent, second in command of MCRT Cote de Pablo as Ziva David, Mossad Liaison Officer to NCIS (episodes 4–24) Pauley...
NCIS Supervisory Special Agent (SSA) of the Major Case Response Team (MCRT) assigned to Washington's Navy Yard Sasha Alexander as Caitlin Todd, NCIS Special...
Sean Murray as Timothy McGee, NCIS Senior Special Agent, second in command of MCRT Wilmer Valderrama as Nick Torres, NCIS Special Agent Emily Wickersham...
Sciuto, Forensic Specialist for NCIS Sean Murray as Timothy McGee, NCIS Special Agent Rocky Carroll as Leon Vance, NCIS Director David McCallum as Dr....
with NCIS: New Orleans, in the episode "Sister City (Part I)", as NCIS Special Agent Dwayne Pride, NCIS Special Agent Christopher LaSalle, NCIS Special...
fourteenth season of NCIS an American police procedural drama originally aired on CBS from September 20, 2016, through May 16, 2017. NCIS revolves around...
Specialist for NCIS Sean Murray as Timothy McGee, NCIS Special Agent Brian Dietzen as Jimmy Palmer, Assistant Medical Examiner for NCIS Rocky Carroll as...
Chief Medical Examiner for NCIS Diona Reasonover as Kasie Hines, Forensic Specialist for NCIS Rocky Carroll as Leon Vance, NCIS Director David McCallum as...
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