In an October 2017 tweet, Pauley Perrette announced she would be leaving "NCIS" at the end of the season. "It was a decision made last year," she said in the tweet. She must have gotten bored playing the same character for 15 years. Nothing to see here right? Well ...

After her final "NCIS" appearance had aired that May, Perrette made a series of cryptic tweets that alarmed fans. "There is a "machine' keeping me silent, and feeding FALSE stories about me," she wrote. "A very rich, very powerful publicity 'machine' ... He did it." She then followed up, writing, "If it's school or work, that you're required to go to? It's horrifying. I left. Multiple Physical Assaults. I REALLY get it now."

Many believed she was referencing a 2016 incident with co-star Mark Harmon. Vanity Fair reports Harmon allegedly brought his dog on set, who ended up severely biting a crew member. After the incident, he continued to bring the dog on set, making many cast and crew members uncomfortable. Most of them were afraid to confront Harmon as the show's star/executive producer, but Perrette was not. From this point onward, she and Harmon never appeared in any scenes together, or were even scheduled to work on the same days.

A month later, Perrette tweeted, "NO I AM NOT COMING BACK! EVER! (Please stop asking?) I am terrified of Harmon and him attacking me. I have nightmares about it."

ncG1vNJzZmivp6x7r7XCpKCsr5mbwW%2BvzqZmbW1gZYZ5e9OhnGasopa7tLLOq6SarJmku267xWalnKGjqHqxrdSlnLJloJq%2Fs7HTrZxmnqKkum5%2BlmarqGVlZ3q6scCrqmannJl8