Warning: SPOILERS for the NCIS episode “Killer Instinct” are ahead!
NCIS has had several multi-episode storylines running during Season 22, one of them being the mystery surrounding Gabriel LaRoche, the agency’s new deputy director. We haven’t seen Seamus Dever’s suspicious character since last December, but he finally returned tonight on the 2025 TV schedule for “Killer Instinct,” and man, was it a doozy. The new NCIS episode delivered some major twists for its LaRoche storyline, and I was surprised to learn that one of them actually tied back to a storyline revolving around Gary Cole’s Alden Parker.