What happened between Pauley Perrette and Mark Harmon?

In 2016, a rift developed between Pauley Perrette and Mark Harmon on the set of NCIS after Harmon’s dog bit a crew member. Despite attempts to resolve the issue, tension persisted, leading to Perrette and Harmon avoiding filming together. Perrette eventually left the show in 2018 amidst rumors of discord with Harmon. While specifics remain unclear, Perrette hinted at bullying and a “machine” keeping her silent. CBS addressed Perrette’s concerns but maintained her departure was unrelated to the dog incident. Perrette retired from acting in 2020, while Harmon’s character exited NCIS as a regular in 2021.