NCIS

The Naval Criminal Investigative Service's team, led by Special Agent Leroy Jethro Gibbs, conducts criminal investigations involving the U.S. Navy and Marine Corps.
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S9, E1

Nature of the Beast

After a firefight and a concussion wreak havoc on Tony's mind, Tony needs Gibbs to help him regain his memories of the investigation.

S9, E2

Restless

When a beloved Marine is fatally stabbed just after returning from Afghanistan, the team makes a surprising discovery about his past.

S9, E3

The Penelope Papers

NCIS discovers a connection between McGee's grandmother (Lily Tomlin) and the murder of a Navy lieutenant.

S9, E4

Enemy on the Hill

An investigation begins after a contract assassin targets a Navy lieutenant commander.