NCIS Clips: “Rule Fifty-One”

We’ve talked at great length about the mystery of Rule #51, the endgame of M. Allison Hart, the motives of the Reynosa cartel and Gibbs’ big decision on tonight’s NCIS season finale.

In the episode, titled “Rule Fifty-One”, it appears as if Gibbs has gone lone wolf in Mexico, with Director Vance trying to foster his own investigation in D.C.

How will it all play out for Gibbs – with the drug bosses and his own boss? We welcome your theories. For now, ET has compiled about two minutes’ worth of clips from tonight.

Here’s a glimpse of what Gibbs and Vance are up to …