A WEEK BEFORE CHRISTMAS, WASHINGTON FACES A CITY-WIDE INTERNET SHUTDOWN, WHICH LEAVES THE NCIS TEAM TO CONSULT WITH THREE IMPRISONED CYBER-TERRORISTS, ON "NCIS," TUESDAY, DEC. 16

"House Rules" - The NCIS team consults with three cyber-terrorists they imprisoned after a city-wide Internet shutdown the week before Christmas. Also, McGee reflects on the case and Gibbs' infamous rules as he pens a heartfelt letter to his father, on NCIS, Tuesday, Dec. 16 (8:00-9:00 PM, ET/PT), on the CBS Television Network.

REGULAR CAST:

Mark Harmon (NCIS Special Agent Leroy Jethro Gibbs)
Michael Weatherly (NCIS Special Agent Anthony "Tony" DiNozzo)
David McCallum (Dr. Donald "Ducky" Mallard)
Pauley Perrette (Abby Sciuto)
Sean Murray (NCIS Special Agent Timothy McGee)
Rocky Carroll (NCIS Director Leon Vance)
Brian Dietzen (Jimmy Palmer)
Emily Wickersham (Probationary NCIS Agent Eleanor "Ellie" Bishop)

GUEST CAST:

Ethan Rains (Former NCIS Systems Administrator Kevin Hussein)
Erin Allin O'Reilly (Heidi Partridge)
Vik Sahay (Ajay Khan)
Indira G. Wilson (FBI Agent Patricia Filsk)
Kent Shocknek (WJGZ News Anchor Guy Ross)
David Bickford (Catholic Priest)
Rick Deats (Navy Admiral John McGee)

WRITTEN BY: Christopher J. Waild

DIRECTED BY: Terrence O'Hara