Timothy McGee’s life changed forever earlier this season when NCIS revealed he had a son he never knew existed—and the story isn’t over yet.
Patrick Keleher will return as Mateo before Season 23 wraps, giving the series another opportunity to explore the emotional fallout from McGee’s unexpected discovery. The storyline began when McGee learned his former girlfriend Olivia had kept her pregnancy secret for nearly two decades, believing he was meant to build a different life.
Since then, the plot briefly stepped aside as the team dealt with the devastating loss of Director Leon Vance. Still, recent episodes hinted McGee is struggling to connect with Mateo, showing just how complicated their relationship remains.
With only a handful of episodes left this season, Mateo’s return could become one of the most meaningful personal arcs still unfolding for McGee.