NCIS
The Enemy Within
TV Flash files “The Enemy Within” as hour 270 of 508 in the TV Flash guide — NCIS (2003–present) on CBS, season 12, episode 12, aired 2015-01-13, 60 min.
From the desk
How this hour is filed
This leaf is S12E12: listed hour 270 of 508 in the NCIS guide, hour 12 of 24 in season 12. It aired 2015-01-13 (60 min). The listed hour before it is “Check” (S12E11). Next is “We Build, We Fight” (S12E13). Broadcast log — titles and dates, not a plot bible.

Catalog log
Broadcast listing — not a TV Flash recap.
The NCIS team searches for a home-grown terrorist after a rescue mission in Syria reveals an American was involved in the capture of a social worker. Meanwhile, McGee and Bishop question DiNozzo's unusual behavior.
Viewer FAQ
Where does The Enemy Within sit in the NCIS guide?
S12E12 is listed hour 270 of 508 — hour 12 of 24 in season 12, season 12 episode 12.
When did NCIS S12E12 air?
The Enemy Within aired 2015-01-13 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
- Mark Harmon as Leroy Jethro Gibbs
Mark Harmon’s Jack McNeil worked Chicago Hope’s ethics-machine hospital — prestige coats, nineties doctor drama with more speeches than sprinting — then became NCIS’s quiet ratings titan as the squad-room still point. Kelley rival hour;…
- Michael Weatherly as Anthony DiNozzo
Michael Weatherly’s Anthony DiNozzo filled NCIS’s squad room like banter was a federal procedure — 2000s Naval Criminal Investigative Service comfort, Mark Harmon as a quiet ratings titan, Gibbs’s rules, found-family that outlived…
- Pauley Perrette as Abby Sciuto
Pauley Perrette made Abby Sciuto the lab’s gothic pulse on NCIS — 2000s Naval Criminal Investigative Service comfort, found-family banter, Gibbs’s rules, Mark Harmon as a quiet ratings titan. The squad room is the serialized story. TV…
- David McCallum as Donald 'Ducky' Mallard
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…
- Cote de Pablo as Ziva David
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
Sean Murray's Timothy McGee grew up inside NCIS as squad-room found family — Naval Criminal Investigative Service agents, military-linked crimes, Gibbs's rules, Mark Harmon as a quiet ratings titan. Sturdy CBS comfort that outlived…