A HIGH-STAKES GAME OF CAT AND MOUSE

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 on NCIS’ April 21 episode “Reboot.”

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.

LL COOL J guest stars as Sam Hanna.

“Reboot” was written by Scott Williams, and directed by Lionel Coleman.

It airs Tuesday, April 21 (8:00-9:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

NCIS

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“REBOOT.” - CBS Original Series NCIS, scheduled to air TUESDAY, APRIL 21 (8:00 PM ET/PT) Pictured (L-R): Sean Murray as Timothy McGee, Gary Cole as Alden Parker, Wilmer Valderrama as Nick Torres, Katrina Law as Jessica Knight, Brian Dietzen as Jimmy Palmer and Diona Reasonover as Kasie Hines. Photo: Robert Voets/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.