NCIS INVESTIGATES THE REASON BEHIND A CONTRACT ASSASSIN TARGETING A DECORATED NAVY LIEUTENANT COMMANDER, ON A REBROADCAST OF "NCIS," TUESDAY, JAN. 31

"Enemy on the Hill" � The NCIS team searches for the person and motive behind a contract killer targeting a Navy lieutenant commander. Meanwhile, Abby uncovers new information about her family after undergoing tests for a kidney donation, on a rebroadcast of NCIS, Tuesday, Jan. 31 (8:00-9:00 PM, ET/PT) on the CBS Television Network. (Originally broadcast 10/11/11.)

SERIES REGULARS

Mark Harmon (NCIS Special Agent Leroy Jethro Gibbs)
Michael Weatherly (NCIS Special Agent Anthony DiNozzo)
Cote de Pablo (NCIS Special Agent Ziva David)
David McCallum (Dr. Donald "Ducky" Mallard)
Pauley Perrette (Abby Sciuto)
Sean Murray (NCIS Special Agent Timothy McGee)
Rocky Carroll (NCIS Director Leon Vance)

GUEST CAST

Jack Conley (Metro Detective Danny Sportelli)
Brett Tucker (Navy Lieutenant Commander Geoffrey Brett)
Michael B. Silver (Nicholas Sandlock)
Melissa Ponzio (Drew Turner)
Morocco Omari (NCIS Special Agent Thomas Survoy)
Shannon Wilcox (Mrs. Roach)
Daniel Louis Rivas (Kyle Davis)
Sibila Vargas (ZNN Reporter Samantha Tate)
Karly Rothenberg (Female Passerby)
Kevin Cotteleer (Paul Marvin Arliss)

WRITTEN BY: George Schenck and Frank Cardea

DIRECTED BY: Dennis Smith

RATING: To Be Announced