NCIS' season finale is going to be pretty tough on Gibbs. Fortunately, he'll have an old friend to help him through it all.

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Muse Watson will reprise his role as Gibbs' mentor and best friend Mike Franks in the Season 10 finale, has learned.  Of course, Mike was killed by the Port-to-Port Killer in Season 8, but his specter made an appearance in Season 9 during Gibbs' own near-death experience in the show's 200th episode.

The finale finds Gibbs (Mark Harmon) & Co. in the middle of a federal witch hunt related to the team's unconventional methods in the international pursuit of the man who killed Ziva's (Cote de Pablo) father and Director Vance's (Rocky Carroll) wife. The investigation will ultimately threaten some of the agents' futures with NCIS.

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