THR reports that the episode, called “The Guardian,” will see the NCIS team uncover a group of ISIS sympathizers planning to attack American aircraft carriers.
Elliott will reprise Harm for a multi-episode arc, beginning with the episode set to air on May 12.
This brings Callen and Sam in contact with Harm, who is captain on the USS Intrepid.
Yes, David James Elliott will be back on the small screen as Harm for the first time in nearly 14 years, and it won’t just be for a cameo or one-off guest appearance.