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NCIS season 18

season of television series

Manuscripts, fine bindings, an engraving plate and preserved performance ephemera
Arts and lettersInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 28, 2026
Entity authorityQ102112817
Source-derived summary

The eighteenth season of NCIS, an American police procedural drama television series, originally aired on CBS from November 17, 2020, through May 25, 2021. The season only contained 16 episodes, shortened due to the COVID-19 pandemic in the United States, making it the second shortest in the series behind season 21, and includes the series' 400th episode. This is the first season to not premiere in the usual September. The season was produced by Belisarius Productions and CBS Studios.

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. The series stars Mark Harmon, Sean Murray, Wilmer Valderrama, Emily Wickersham, Maria Bello, Brian Dietzen, Diona Reasonover, Rocky Carroll, and David McCallum. The season is Bello's last as a series regular, as she left after eight episodes. The season finale serves as Wickersham's final series regular appearance as Eleanor Bishop, leaving the series after 8 years. Several late-season episodes feature Pam Dawber, Harmon's real-life spouse.

Cast and characters

Main

Mark Harmon as Leroy Jethro Gibbs, NCIS Supervisory Special Agent (SSA) of the Major Case Response Team (MCRT) assigned to Washington's Navy Yard (episodes 1–10)/suspended (episodes 11–16)

Sean Murray as Timothy McGee, NCIS Senior Special Agent, Second in Command of MCRT

Wilmer Valderrama as Nick Torres, NCIS Special Agent

Emily Wickersham as Eleanor "Ellie" Bishop, NCIS Special Agent

Maria Bello as Dr.

Editorial summary

“NCIS season 18” enters the record as season of television series. Crown Archives preserves that source wording while asking what NCIS, season and television can confirm, complicate or overturn.

Editorial reviewBest approached as a cultural-object dossier: authorship and date matter, but circulation and reception often explain the wider significance. The current lead gives the account dated anchors—2020, 2021—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around NCIS, season and television.
Editorial analysis

Why this record matters

“NCIS season 18” is worth following because a concise public description often conceals a longer documentary argument. Here, NCIS, season and television provides the most credible route into that argument.

Evidence profile

Object files, edition statements, performance records and contemporary criticism preserve different stages of the work’s history. The source revision retrieved here is dated Aug 28, 2026. The linked authority identifier is Q102112817. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2020 and 2021.

Critical limits

Rights, attribution and provenance may remain disputed even when a general reference summary presents a stable account. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

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Three-step research path

  1. Establish the record: confirm the title “NCIS season 18”, its source revision and the description used here.
  2. Expand the search: follow NCIS season 18 primary sources, NCIS season 18 archive and NCIS research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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  3. Where is authorship, date or provenance documented?
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Source & attribution

This entry incorporates text from NCIS season 18” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.