Recently, Mark Harmon surprised fans when he announced his departure from the long-running CBS drama NCIS. Harmon had been with the show since its inception in 2003 and had also served as an executive producer since 2011. His decision to leave shocked everyone, as he was considered the heart and soul of the series.

Many fans wondered if the cast of NCIS truly got along in real life, especially Harmon. However, it seems that Harmon had a good relationship with his co-stars. Sean Murray, who plays Timothy McGee, revealed that he first met Harmon on the show Harts of the West and was in awe of him.

Cote de Pablo, who portrays Ziva, saw Harmon as a mentor and father figure. Michael Weatherly, who left NCIS to lead his own show Bull, gained insight from working with Harmon.

However, Harmon didn't have a good relationship with former co-star Pauley Perrette, who left the show in 2018. Reports emerged of an incident on set involving Harmon's dog biting a crew member, which led to a frosty relationship between the two actors.

Despite Harmon's departure, showrunner Steven D. Binder remains optimistic about the future of NCIS, hinting that Harmon may return at some point. Whether the show will be renewed for a 20th season is still uncertain.