Michael Weatherly's Tony DiNozzo was one of the cornerstones of CBS procedural NCIS, only to stun fans by suddenly leaving ...

Never let it be said that Donald Bellisario was incapable of changing his mind — his original vision for Gibbs was quite a ...

NCIS star Sasha Alexander was part of the show's original cast until she decided to leave the procedural drama in season two.

For 18 seasons (and four season 19 episodes), Mark Harmon starred as former U.S. Marine Corps scout sniper–turned–special agent Leroy Jethro Gibbs. "What has always drawn me here is the character I ...

NCIS has seen its fair share of cast exits throughout its 20-plus years on TV — but some stars, including Michael Weatherly, have also made epic comebacks. When season 23 premiered in fall 2025, Sean ...

Mark Harmon, Pauley Perrette and Michael Weatherly are part of 'NCIS' history Catherine Santino is a Style Writer-Reporter at PEOPLE. She began contributing to PEOPLE in 2022 and joined the staff full ...