Mark Harmon's son, Sean, portrayed a younger version of his father's "NCIS" character several times, so why didn't he reprise ...

Mark Harmon has come a very long way from his very first acting jobs. The former NCIS star has been in the business since the early 1970s, and aside from his role as Special Agent Leroy Jethro ...

Meanwhile, his father, Tom Harmon, was an American football player, military pilot, actor, and sports broadcaster. Asked ...

Both Sean and his father, Mark Harmon, will serve as executive producers of NCIS: Origins. The elder Harmon will also act as the show's narrator, adding an extra layer of connection between the ...

Mark Harmon's son, Sean Harmon ... serving as an executive producer for the series, along with his father, who narrates NCIS: ...

NCIS star Mark Harmon very nearly walked away from the show after season 4 due to a behind-the-scenes clash with one of his ...

“[Mark Harmon] is more of a friend mentor. He was always like a father figure to me,” the actress explained during an appearance on BUILD. “Obviously, Ziva and Gibbs have that but Cote and ...