WHEN ABBY'S HOMELAND SECURITY THINK TANK IS COMPROMISED, THE NCIS TEAM DISCOVERS A THEORETICAL TERROR PLAYBOOK HAS BEEN STOLEN AND IS BEING AUCTIONED ON THE BLACK MARKET IN NEW ORLEANS, ON A REBROADCAST OF A SPECIAL TWO-HOUR CROSSOVER EVENT ON "NCIS" AND "NCIS: NEW ORLEANS," TUESDAY, DEC. 19

Grammy Award-Nominated Artist Maren Morris Performs on "NCIS: New Orleans"

"Pandora's Box, Part I" - After Abby's homeland security think tank is compromised and she is found in possession of a real bomb, the NCIS team discovers the leader of the group has been murdered and a theoretical terror playbook has been stolen, on a rebroadcast of the first part of a special two-hour crossover event on NCIS, Tuesday, Dec. 19 (9:00-10:00, ET/PT) on the CBS Television Network. (Originally broadcast 2/14/17.)

"Pandora's Box, Part II" - NCIS agents McGee and Torres travel to New Orleans to partner with Pride and his team in the search for a missing homeland security theoretical terror playbook, on a rebroadcast of the conclusion of a special two-hour crossover event on NCIS: NEW ORLEANS, Tuesday, Dec. 19 (10:00-11:00, ET/PT) on the CBS Television Network. Grammy Award-nominated artist Maren Morris performs. (Originally broadcast 2/14/17.)

NCIS REGULAR CAST:

Mark Harmon (NCIS Special Agent Leroy Jethro Gibbs)
Pauley Perrette (Forensic Specialist Abby Scuito)
Sean Murray (NCIS Special Agent Timothy McGee)
Wilmer Valderrama (NCIS Special Agent Nicholas "Nick" Torres)
Jennifer Esposito (NCIS Special Agent Alexandra "Alex" Quinn)
Brian Dietzen (Jimmy Palmer)
Emily Wickersham (Probationary Agent Eleanor "Ellie" Bishop)
Duane Henry (MI6 Officer Clayton Reeves)
Rocky Carroll (NCIS Director Leon Vance)
David McCallum (Dr. Donald "Ducky" Mallard)

NCIS "PANDORA'S BOX, PART I" WRITTEN BY: Cindi Hemingway

NCIS "PANDORA'S BOX, PART I" DIRECTED BY: Arvin Brown

NCIS: NEW ORLEANS REGULAR CAST:

Scott Bakula (Special Agent Dwayne Pride)
Lucas Black (Special Agent Christopher Lasalle)
Vanessa Ferlito (FBI Special Agent Tammy Gregorio)
Rob Kerkovich (Forensic Scientist Sebastian Lund)
Daryl "Chill" Mitchell (Investigative Computer Specialist Patton Plane)
Shalita Grant (Special Agent Sonja Percy)
CCH Pounder (Dr. Loretta Wade)

NCIS "PANDORA'S BOX, PART II": Christopher Silber

NCIS "PANDORA'S BOX, PART II": Levar Burton