Question: what episode does tony kill ziva's boyfriend?
Answer: The episode is written by David North and directed by Dennis Smith, and was seen live by 16.51 million viewers. "Aliyah" picks up following a cliff-hanger in the previous episode, "Semper Fidelis", in which Tony DiNozzo fatally shoots Ziva David's Mossad boyfriend, Michael Rivkin, in self-defense.