Penelope Langston is a fictional character portrayed by Lily Tomlin in the TV series NCIS.
In the first episode they appeared in, titled The Penelope Papers (season 9), they were 72 years old.
They appear in 1 episodes out of a total of 467 aired so far
Episodes1
The Penelope Papers
episode S9.E3 october 2011A Naval Reserve lieutenant dies of a gunshot in Washington, DC; Gibbs and company investigate; the victim has one of McGee's cards; McGee learns that his paternal grandmother is involved. The gang assemble the pieces and catch the bad guy.