KEY EVIDENCE IN A NCIS MURDER INVESTIGATION LEADS GIBBS AND THE TEAM TO MCGEE'S GRANDMOTHER, ON "NCIS," TUESDAY, OCT. 4

Emmy, Tony and Grammy Award Winner Lily Tomlin Guest Stars as Penelope Langston, McGee's Grandmother

"The Penelope Papers" - The line between McGee's personal and professional life is blurred when NCIS uncovers a connection between his grandmother and the murder of a Navy lieutenant, on NCIS, Tuesday, Oct. 4 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Lily Tomlin guest stars as Penelope Langston, McGee's grandmother.

SERIES REGULARS

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

RECURRING CAST

Jimmy Palmer Brian Dietzen

GUEST CAST

Penelope Langston Lily Tomlin
John Westfal Sam McMurray
Max Ellswood David Clennon
Justine Booth Hillary Tuck
Andrew Pike James Connor
Navy Lieutenant Paul Booth Matthew Alan

Written by: Nicole Mirante-Matthews

Directed by: Arvin Brown

RATING: To Be Announced