Code of Conduct NCIS: Naval Criminal Investigative Service : Season 7 Episode 5
TV-14 CBS 1h 00m
Aired: October 20th, 2009 @ 9:00 PM EST on CBS
When a Marine known for his practical jokes is found dead on Halloween Eve, the NCIS team discovers that the victim's "good-natured" pranks may have inspired ghoulish retribution. Meanwhile, Ziva tries to adjust to her new role on the team.
