Watch Ncis S04e (1) «4K · 720p»

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Facing a warrant for espionage and murder, Ziva contacts Gibbs—who is living on a beach in Mexico—for help. Despite being retired, Gibbs returns to Washington to help his former team prove Ziva's innocence. They eventually discover the true culprit is Ziva’s former Mossad partner, , who was long thought to be dead. Cast & Key Characters The core ensemble for this season premiere includes: Mark Harmon as Special Agent Leroy Jethro Gibbs Watch NCIS S04E (1)

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While driving to work, Ziva witnesses a political assassination carried out by a motorbike with two hooded figures. The attack results in the deaths of a Syrian colonel and two FBI agents. Because Ziva's car was abandoned at the scene, the FBI identifies her as the prime suspect, leading her to go into hiding. Despite being retired, Gibbs returns to Washington to