For eight seasons Cote de Pablo was one of the reasons people watched NCIS. She was a fan favorite. She left NCIS because she wanted to and not because she was asked. She made a lot of money and had a very good life and she gave it all up. She didn't do it to go into movies or do it for the reasons that many actors leave a show. Hello Katherine Heigl. Cote says she did it for very personal reasons and will never reveal the reason she left the show. You know it has to be something dark and tragic or that she signed an agreement because it was something that happened on the show. I bet there is a blind about her departure. Something that the producers of the show don't want you to know. Ziva will make a couple of appearances early this season to wrap things up. Her last appearance will be on October 1st.