As Weatherly’s end of the season exit from the series approaches, 海军罪案调查处 executive producer revealed to TV Line that the character of Ziva will be discussed during Tony’s final episodes.
It doesn't seem like something 海军罪案调查处 would do, but 你 never know. They mentioned doppleganger in the 文章 & for those that remember awhile back they talked about a doppleganger episode that would be leading to the finale... so perhaps?