SAM GOES UNDERCOVER IN A FEDERAL PRISON TO TAKE DOWN AN UNDERGROUND TERRORIST ORGANIZATION, ON "NCIS: LOS ANGELES," TUESDAY, FEB. 1

Peter Cambor Returns as Operational Psychologist Nate Getz

"Lockup" - Sam goes undercover as a prisoner to track down a terrorist group responsible for several bombings around the world, on NCIS: LOS ANGELES, Tuesday, Feb. 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Peter Cambor returns as Operational Psychologist Nate Getz.

SERIES REGULARS:

NCIS Special Agent G. Callen................................. Chris O'Donnell
NCIS Special Agent Sam Hanna.................................. .LL COOL J
Henrietta "Hetty" Lange.................. .Linda Hunt
NCIS Special Agent Kensi Blye ................................. Daniela Ruah
LAPD Detective Marty Deeks..............Eric Christian Olsen
Tech Operator Eric Beale.........Barrett Foa
NCIS Intelligence Analyst Nell Jones.......................... Ren�e Felice Smith

GUEST CAST:

Operational Psychologist Nate Getz.........................Peter Cambor.
Syed Husain........................Jaye Razor
Mowadh "Moe" Dusa.......Ronald Augueste...
Olivia...........................Mieko Hillman
Abdul Habaza.............Hakeem Kae-Kazim
Nurse.............................Garret T. Sato
David Jacobs............Jason Matthew Smith
Guard #2.................Eric Thomas Wilson
Guard #1......................Rick Ravanello.....
Ethan Harper................Dean Chekvala

WRITTEN BY: Christina M. Kim & Frank Military

DIRECTED BY: Jan Eliasberg

RATING: TV14-V