Mark Harmon left open the chance that his character, Special Agent Gibbs, could come back to NCIS. Now, there are rumors that his indecision is making his former co-stars at CBS angry.

“Mark’s been teasing a return to the show and everyone wanted him back,” a source told Star.

Mark Harmon, who is 71 years old, got sidetracked by his new book, Ghosts of Honolulu, which is about the first Japanese American Office of Naval Intelligence during World War II. This made him unsure about whether or not to go back to NCIS.

“He’s still on the fence when it comes to going back to the grind,” says someone who knows him. “People wish he would stop getting them excited only to let them down.”

Wilmer Valderrama is said to be happy that Mark isn’t sure if he wants to come back as the star.

“Wilmer has nothing personal against Mark, but he wouldn’t mind if he never came back,” said the source. “This has been Wilmer’s time to shine, and he feels like he’s finally a main star, not a supporting player.”

Back in November 2022, Diona Reasonover, who plays Kasie Hinds, told Entertainment Tonight that Mark still cares about the show as a director and sometimes stops by the set.

She said, “I think a lot of people, me included, were worried. This [was] our first season without our wonderful leader. But it’s also been cool to explore new characters and new relationships and kind of figure out all these new rules.”