Rule 91

Aired May 25, 2021 · 8:00 PM ET · 45 min

8.2 / 10 IMDb · 529 votes

Season finale

While pursuing a dangerous arms dealer, the team is shocked when Bishop is implicated in an old NSA leak while Gibbs and Marcie realize the killer they've been tracking may be onto them.

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Aired: May 25, 2021 · 8:00 PM ET
Runtime: 45 min
Season: 18
Episode: 16
Rated: 12+

TheTVDB 8398153 IMDb tt14286674