NCIS
Reboot
TV Flash files “Reboot” as hour 504 of 508 in the TV Flash guide — NCIS (2003–present) on CBS, season 23, episode 17, aired 2026-04-21, 60 min.
From the desk
How this hour is filed
This leaf is S23E17: listed hour 504 of 508 in the NCIS guide, hour 17 of 20 in season 23. It aired 2026-04-21 (60 min). The listed hour before it is “S.O.S.” (S23E16). Next is “Bad Impressions” (S23E18). Broadcast log — titles and dates, not a plot bible.
Catalog log
Broadcast listing — not a TV Flash recap.
With most of NCIS away and the mainframe shut down for a midnight upgrade, Kasie and a skeleton crew are left in a darkened building when someone begins hunting from inside. What starts as a routine reboot becomes a high-stakes game of cat and mouse through powerless hallways until an unexpected ally, Sam Hanna, steps into the fight.
Viewer FAQ
Where does Reboot sit in the NCIS guide?
S23E17 is listed hour 504 of 508 — hour 17 of 20 in season 23, season 23 episode 17.
When did NCIS S23E17 air?
Reboot aired 2026-04-21 and is listed at 60 minutes.
Do I need JAG before NCIS?
It launched via backdoor pilot episodes on JAG, but the mothership plays as its own squad-room ritual. Start with Gibbs's team, not a homework assignment.
In the series
Why this series still plays
Naval Criminal Investigative Service agents solve military-linked crimes with found-family banter and Gibbs's rules. Mark Harmon became a quiet ratings titan; the squad room is the serialized story. Sturdy CBS comfort that outlived fashion and multiplied into a carrier group of spinoffs.
Gibbs's rules, a squad room that is a second home, and a fandom that will fight you if you call it uncool — welcome to the quiet ratings titan the group chat pretends not to respect until someone dies in the bullpen. (Spoiler fence: mild. The team can bleed.) Donald P. Bellisario and Don McGill's CBS series premiered September 23, 2003, after a *JAG* backdoor pilot, and became a flagship with well over twenty seasons. Mark Harmon as Leroy Jethro Gibbs for many years; Michael Weatherly's DiNozzo, Pauley Perrette's…
Filed against
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- Pauley Perrette as Abby Sciuto
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David McCallum’s Illya Kuryakin made The Man from U.N.C.L.E. multinational cool — 1960s catalog gadget briefcases, Bond fever’s television wing, then NCIS stretching the blond into Gibbs-adjacent lab weather. TV Flash files him as the…
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Cote de Pablo’s Ziva David gave NCIS its lethal charm — Mossad steel in Gibbs’s squad room, found-family banter, military-linked crimes as CBS comfort that outlived fashion. Mark Harmon’s ratings titan needed a partner who could knife and…
- Sean Murray as Timothy McGee
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