NCIS: Season 3 Episode 20: Untouchable
Starring: Mark Harmon, Michael Weatherly, Cote de Pablo, Sean Murray, David McCallum, Sasha Alexander, Rudolf Martin
Length: 60 minutes
NCIS: S03E20 Description: Tony and Ziva go to the home of a woman Navy lieutenant and cryptologist; they find her dead, apparently by suicide. Gibbs and the gang find evidence of murder instead; after pursuing the wrong clues, they lose a mole but catch the killer.