SPOILER ALERT: This story contains spoilers from the Season 16 finale of "NCIS."

"NCIS" ended its sixteenth season on Tuesday night and a very special character made an unexpected cameo in the episode's last few moments.

Cote de Pablo, who played Mossad agent Ziva David from 2005 to 2013 returned — much to Gibbs' (Mark Harmon) surprise.

“This surprise moment is just the beginning,” executive producers Frank Cardea and Steven D. Binder said in a statement. “We are thrilled to share that Cote de Pablo will guest star in the 'NCIS' Season 17 premiere this fall as Ziva’s warning to Gibbs unfolds.”

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"Hello, Gibbs. No time for pleasantries," Ziva says to Gibbs. "You're in danger."

The beloved character was thought to be dead after a mortar attack but her body was never found, which left fans wondering what exactly happened to her. Many thought she faked her own death and went into hiding.

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De Pablo left the series after Season 11 because she wasn't happy with the show's material. "Unfortunately, because of political things and the scripts not being good enough, I chose not to [continue]," the actress said at the time.

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"I love this character. I worked eight years in crafting this character and loving her, so when I felt or perceived the character was not being treated with the respect that she deserved, all the money in the world [couldn't make me stay]," she explained.

"NCIS" will be returning for Season 17 in the fall on CBS.