Despite leaving the show to tackle a fresh challenge, Mark Harmon is apparently not against the idea of returning to the main ...

While Mark Harmon re-immersed himself in the NCIS world recently, his departure from the original series almost tanked the show. Mark, who played Leroy Jethro Gibbs, decided to step down from the show ...

Except, of course, he did help cast it. Related: Mark Harmon on Why Austin Stowell Is the Perfect Young Leroy Jethro Gibbs ...

Even though Harmon has a “stepback role” on NCIS: Origins, it’s still been exciting to see him back in the franchise after he ...

Warning: SPOILERS for the NCIS: Origins two-part premiere “Enter Sandman” are ahead! When NCIS: Origins was announced back in January, it was mentioned that Mark Harmon, who played Leroy ...

NCIS fans know the duo well from the parent show, where their older version solved many cases. Mark Harmon played Gibbs on NCIS; Austin Stowell now plays the younger Gibbs on NCIS: Origins.

The new series turns the clock back to 1991, when Gibbs (Austin Stowell, taking over for Mark Harmon) first joined NCIS as a special agent at Camp Pendleton. The two-hour premiere follows as the ...

Mark Harmon is an important part of NCIS: Origins. Pic credit: CBS Mark Harmon remains an important component of the NCIS Universe, even though he is no longer starring on the flagship show.

Harmon confirmed that many actors tried out for ... though I guess he has his own spinoff on the way with NCIS: Tony & Ziva. I don't just go to work for me, I go to work with everyone.

Luckily, in Harmon, he had a mentor with a lot of experience. Ahead of the Monday, Oct. 14 premiere, PEOPLE caught up with the duo for a sneak peek at NCIS: Origins. PEOPLE: Mark, what do you ...