ABBY'S BROTHER IS LINKED TO AN NCIS CASE THAT UNITES THE WASHINGTON, D.C. AND NEW ORLEANS OFFICES WHEN THE PASSENGERS AND CREW ON A PRIVATE PLANE HE CATERED ARE MURDERED, ON A REBROADCAST OF "NCIS," TUESDAY, DEC. 27

Tyler Ritter Guest Stars as Luca Scuito, Abby's Brother

"Sister City: Part One" - After the passengers and crew of a private plane traveling from New Orleans to Washington D.C. are lethally poisoned, all evidence points to the missing chef, Abby's brother, Luca (Tyler Ritter)
. Gibbs and the D.C. team work in conjunction with Pride and the New Orleans team to locate Luca and determine why a private tech company was targeted, on a rebroadcast of NCIS, Tuesday, Dec. 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. (Originally broadcast 1/5/16.)

NCIS REGULAR CAST:

Mark Harmon (NCIS Special Agent Leroy Jethro Gibbs)
Michael Weatherly (NCIS Special Agent Anthony "Tony" DiNozzo)
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)
David McCallum (Dr. Donald "Ducky" Mallard)

NCIS GUEST CAST:

Scott Bakula (NCIS Special Agent Dwayne Pride)
Lucas Black (NCIS Special Agent Christopher Lasalle)
Zoe McLellan (Special Agent Meredith "Merri" Brody)
Shalita Grant (Sonja Percy)
Tyler Ritter (Luca Sciuto)
Lev Gorn (Russian Counselor Anton Pavlenko)
Bryan Batt (Blye CFO Dalton Greenbrick)
Cassidy Freeman (Eva Azarova)
Alex Quijano (Blye Head of Security Blake Huxley)
Wendy Davis (Navy Captain Kensington Bloom)
Jamie Gray Hyder (Navy Petty Officer First Class Heidi Orr)
Abraham Amkpa (Navy Petty Officer First Class Feliz Kane)
Ilia Volok (Burly Man)
Samran Chakrabarti (Jenner Blye)

NCIS "SISTER CITY: PART ONE" WRITTEN BY: Christopher J. Waild

NCIS "SISTER CITY: PART ONE" DIRECTED BY: Leslie Libman