THE TEAM INVESTIGATES A RANSOMWARE ATTACK THAT TAKES OUT THE ENTIRE POWER GRID FOR WEST L.A. AND PARALYZES THE CITY, ON "NCIS: LOS ANGELES," SUNDAY, DEC. 17

"All Is Bright" - The team investigates a ransomware attack that takes out the entire power grid for west L.A. and paralyzes the city. Also, as the first holiday season since the death of Sam's wife approaches, he struggles to find the best way for his family to celebrate, on NCIS: LOS ANGELES, Sunday, Dec. 17 (9:30-10:30 PM, ET/9:00-10:00 PM, PT) on the CBS Television Network.

REGULAR CAST:

Chris O'Donnell (Special Agent G. Callen)
LL COOL J (Special Agent Sam Hanna)
Linda Hunt (Henrietta "Hetty" Lange)
Daniela Ruah (Special Agent Kensi Blye)
Eric Christian Olsen (LAPD Detective Marty Deeks)
Barrett Foa (Tech Operator Eric Beale)
Renée Felice Smith (Intelligence Analyst Nell Jones)
Nia Long (Executive Assistant Director Shay Mosley)

RECURRING GUEST CAST:

Andrea Bordeaux (NCIS Special Agent Harley Hidoko)

GUEST CAST:

Alicia Fuentes (Lisandra Tena)
Eli Bildner (Edgar Parsons)
Uriah Shelton (Finn)
Miriam Flynn (Marilyn Parsons)
Bruce Beatty (George Forester)
Jordan L. Jones (Brady)
David Grant Wright (Oliver Decker)
Alejandro Cardenas (Jose Fuentes)
Marcus Terrell Smith (Larry)
Fabian Jaime (Man)
Steve Gutierrez (Robert Ruiz)
Santiago Veizaga (Child)

WRITTEN BY: Chad Mazero

DIRECTED BY: Ruba Nadda