Mark Harmon’s ‘NCIS’ Guest Appearance ‘Made Him Realize’ How Much He Misses Acting Amid Retirement - Yahoo

Mark Harmon To 'Quit' Retirement? NCIS Star Has 'Gas Left In The Tank' For Big Screen - International Business Times UK

Robyn Lively Returns to 'NCIS' Universe, Reunites With Mark Harmon 22 Years After 'JAG' - TV Insider

‘Fans Will Be Pissed Off’ When They Find Out About Mark Harmon’s Comment Regarding Gibbs’ Rules - Cinemablend

NCIS: Origins Co-Creator on 1 Detail Mark Harmon Doesn’t Know About Gibbs - Yahoo

Mark Harmon Will "Destroy Some [NCIS] Fans' Hearts" For One Surprising Reason - Screen Rant

NCIS: Origins Creators Reveal Key Mark Harmon Detail That Will 'Destroy' Fans' Hearts - Comic Book Resources

'NCIS' fans will be 'pissed off' to learn Mark Harmon doesn't know this about his character Gibbs, 'Origins' co-creator says - Entertainment Weekly

Returning NCIS Star Promises Fans Will Be ‘Surprised’ By NCIS: ORIGINS Crossover - Movieguide

NCIS: Origins Finally Settles the Debate Over Mark Harmon’s Gibbs Replacement With 1 Perfect Scene - Comic Book Resources

'NCIS: Origins' Season 2 Episode 5 Review: Mark Harmon's Return Can't Fully Save This Prequel Series' Decades-Spanning Case - Collider

Mark Harmon teases future on NCIS: Origins after guest appearance - HELLO! Magazine

NCIS: Origins Showrunners Address If Mark Harmon's Gibbs Will Ever Reunite With Lala - Screen Rant

What happened with Mark Harmon’s character on NCIS: Origins? Everything to know about his previous exit amid his surprise return - primetimer.com

Mark Harmon: From Football Star to Television Icon - Info Petite Nation