Catherine Bell to Join David James Elliott on 'NCIS: LA' in a 'JAG' Reunion

Meaghan Darwish
CBS/Getty Images

UPDATED (4/2/2019):

It's really becoming a JAG reunion on NCIS: Los Angeles as it's been announced that Catherine Bell will reprise her role as Lieutenant Colonel Sarah "Mac" MacKenzie in the upcoming May 19 episode of the CBS series.

Unlike co-star David James Elliott, who will appear as early as March 12, Bell will make her debut on the show in the Season 10 finale. According to Deadline, Mac will become involved when Hetty (Linda Hunt) calls on her old friend for help.

Is 'NCIS: LA' Setting Up Season 10 to Be Its Last?

Is 'NCIS: LA' Setting Up Season 10 to Be Its Last?

The March 31 episode had fans buzzing that this could be the CBS series' final run.

ORIGINAL STORY (3/29/2019):

David James Elliott will return to the small screen as Navy Captain Harmon Rabb Jr., but this time it will be on NCIS: Los Angeles.

The character, who originated in the series JAG, will appear in a multi-episode arc ,according to Deadline. Elliott will make his first appearance in the May 12 episode, "The Guardian."

'NCIS: LA' Cast Weighs In on the Emotional Hetty Surprise at Densi's Wedding

'NCIS: LA' Cast Weighs In on the Emotional Hetty Surprise at Densi's Wedding

The cast and crew take us behind the scenes of the very special return that had everyone in tears.

Despite NCIS being a spinoff off of the 10-season series JAG, this will be Elliott's first time in any of the NCIS series. In "The Guardian," viewers will see Callen (Chris O'Donnell) and Sam (LL Cool J) work directly with Rabb when ISIS sympathizers plan to attack the XO Captain's ship the USS Intrepid.

The stint marks a reunion between Elliott and NCIS: LA's showrunner R. Scott GEmmill, who served as a writer-producer on JAG.

Gemmill said in a statement, "I was really excited to get a chance to work with David again. I did the first 4 seasons of JAG with him so to be able to work together again in and of itself is great – but to do so with the same character…on our show…this many years later — that's pretty damn amazing."

David James Elliott celebrate's JAG's 100th episode in 2000 (Credit: David McNew Online USA Inc.)

"Bringing Harmon Rabb to work with NCIS: Los Angeles makes for a formidable coalition, and both entities are going to need all the help they can get when confronted with the greatest challenge of their careers."

This will be the first major crossover between JAG and the NCIS franchise since their creation, which is sure to excite fans of both. Again, Elliott's first appearance will take place May 12, so mark your calendars.

NCIS: Los Angeles, Sundays, 9/8c, CBS