Season 9, Episode 1 Nature of the Beast
First Aired: September 20, 2011
In the ninth-season opener, Tony's secret assignment for the SECNAV leads to an NCIS agent's death and leaves Tony and Gibbs to solve the mystery of how the tragedy occurred.
Cast & Details See all »
- Premiered: September 23, 2003
- Rating: TV-14
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- Premise: The series is about criminal cases involving Navy and Marine personnel, handled by the Naval Criminal Investigative Service. (more)