NCIS Season 6 Episode 23

Israeli 'liaison' Ziva David confirms the identification of Mossad top killer Michael Aaron Rivkin. He already killed Nick Qaderi, an Arab terrorist, and apparently plans three more similar murders in the US. The director puts Special Agent Lara Macy's team on the case, as Gibbs officially remains a suspect in related cases 18 years before. Special Agent G. Callen poses as Nick's arms trade contact, Liam, so he can approach the next plausible targets. He begins with Haziq Khaleel, who runs an auto shop which employs Nasim Bouros, also Syrian-born but already stabbed by Rivkin, and the mysterious Yumah. Haziq's unsuspecting girlfriend Shaqira is the sister of Rifa. Tony knows Ziva secretly spoke Rivkin and questions her loyalty. Gibbs acts alone. Then identity swaps get found out.