The actress, 50, approached Twitter on Friday to say she is "terrified" by Harmon, 67, who has been a leading role in the series of criminal investigations.
"NO, IM NOT GOING BACK!" NEVER! (Please, stop asking?) I'm terrified that he and Harmon have attacked me, I have nightmares about it, "he said. "I have a new program that is SAFE AND HAPPY! You will love it! #HappyPlace Love everyone!"
Perrette, who played with forensic specialist Abby Sciuto, left the series in 2018 after 15 seasons on the show.
In a follow-up tweet, she has shared photos of a supposed member of the battered crew and in stitches.
"Do you think I did not hit back? You misunderstood me! This happened to my crewman and I fought like hell! To protect my crew!" He added. "And then I was physically assaulted for saying NO!" And I lost my job. "
In May of 2018, Perrette used Twitter to mention that his departure was due to "multiple physical aggression".
CBS Television Studios responded to Perrette's allegations in a statement at the time, saying the study worked with her to rectify an unspecified "concern" she had filed the previous year.
"Pauley Perrette had a great career at NCIS and we will all miss her," the statement said. "More than a year ago, Pauley came to us because of a concern in the workplace, we take the matter seriously and work with him, we are committed to a safe work environment in all our shows."
