Can 'JAG's' Harm & Mac Help the 'NCIS: LA' Team in the Season 10 Finale? (PHOTOS)

Meredith Jacobs

Welcome back into the fold, Mac.

Catherine Bell reprises her JAG role in the NCIS: Los Angeles Season 10 finale, and CBS has released new photos showing her as Mac once again. She joins her former costar, David James Elliott (who first appears in the previous episode, "The Guardian"), in helping the team with the latest threat.

Are Eric and Nell Leaving 'NCIS: Los Angeles' at the End of Season 10?

Are Eric and Nell Leaving 'NCIS: Los Angeles' at the End of Season 10?

Is a permanent change coming to OSP's Ops Center?

In "False Flag," Sam (LL Cool J) and Callen (Chris O'Donnell) continue working with Navy Captain Harmon "Harm" Rabb, Jr. (Elliott) to locate the ISIS sympathizers aboard the USS Allegiance. Meanwhile, Hetty (Linda Hunt) recruits her friend, Lieutenant Colonel Sarah "Mac" Mackenzie to help obtain information from a Russian diplomat.

Click through the photos above to see JAG and NCIS: LA working together and who will be returning in the finale.

15 of Hetty's Best One-Liners on 'NCIS: Los Angeles' (PHOTOS)

15 of Hetty's Best One-Liners on 'NCIS: Los Angeles' (PHOTOS)

Now that Linda Hunt has returned, we're celebrating our favorite team member!

NCIS: Los Angeles, Sundays, 10/9c, CBS