Episode guide

S23·E17 Reboot (1)

Name: Reboot (1)
Released: 2026-04-21
Duration: 43 min
Cast: LL Cool J, Noah Bean, Lisa Cirincione, Josh Banday, Josh Sussman

Episode: Season 23, Episode 17
Air Date: April 21, 2026
Runtime: 43 minutes
Director: Lionel Coleman
Writer: Scott Williams
Score: 8.7/10 (3 TMDB votes)
Story Type: Core Character Arc

Core Aired April 21, 2026 43 min ★ 8.7/10 · 3 TMDB votes

Narrative Classification: Standard continuity chapter maintaining character development and season progression.

Synopsis

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.

Source-grounded

Episode recap

With most of the NCIS team away and the mainframe shut down for a midnight upgrade, Kasie and a skeleton crew find themselves alone in a darkened building. While they are handling the routine maintenance, someone begins hunting them from inside the facility. What initially begins as a routine reboot quickly transforms into a high-stakes game of cat and mouse through powerless hallways. As the danger escalates within the dark building, an unexpected ally, Sam Hanna, steps into the fight to assist.

Sources & verificationNCIS (TV Series 2003– ) - Full cast & crew - IMDb NCIS: Season 1 (2003) - Cast & Crew — The Movie Database (TMDB)NCIS — The Movie Database (TMDB)'NCIS' Cast Talks Season 21, Show Longevity, Integrating New Characters CBS, CBS Studios Chiefs On 'NCIS' Universe: Renewals, Crossovers, Tiva

Rate this episode

Your rating is anonymous and can be changed later.

Be the first viewer to rate it.

Director & writers

Scott WilliamsWriterLionel ColemanDirector

Guest stars

LL Cool JSam Hanna

Noah BeanDOD Chef David Barbado

Lisa CirincioneKate Manning

Josh BandayHarold Goodell

Josh SussmanDaryl Greco

Shannon CorbeilNavy MA2 Anne Swift

Juliana Danielle FerreiraMegan Manning

Lucas MazankoJoey Manning

Geoffrey ArendTommy Manning

Frequently Asked Questions

When did Season 23 Episode 17 of NCIS air?

Season 23, Episode 17 ('Reboot (1)') originally aired on April 21, 2026.

How long is Season 23 Episode 17 ('Reboot (1)')?

The runtime for this episode is approximately 43 minutes.

What happens in NCIS Season 23 Episode 17?

All Ncis episode ratings Season 23 Where to watch

Top-rated Ncis episodes

What viewers say

No comments yet. Be the first to share your take on Ncis S23E17.