Where can I watch “NCIS” Season 23 Episode 17 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

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Watching earlier episodes in season 23 helps you follow the plot and character arcs leading into this episode.

Watch NCIS Season 23 Episode 17 Online

“Reboot (1)” — Watch "NCIS" Season 23 Episode 17 online in HD for free. Check streaming providers, cast, and episode details.

Apr 21, 2026 Season 23 Episode 17 43 min M

10.0 ★ ★ ★ ★ ★

2 votes

NCIS Season 23

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Season 23 Episode 17 — Aired on Apr 21, 2026 • runs about 43 minutes.

Directed by Lionel Coleman.

Written by Scott Williams.

Notable cast/guest names in this episode include Sean Murray, Wilmer Valderrama, Katrina Law, Brian Dietzen.

This page includes 1 official still(s) (when available) plus legal availability links.

Looking for “watch NCIS Season 23 Episode 17 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

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.