Kill Ari (Part II)

Gibbs's determination to kill Ari in revenge for Kate Todd's death increases after he mounts attacks against various members of the team in his sadistic game with Gibbs. Ari's control officer, Ziva David, begins to doubt Ari's innocence and agrees with Gibbs's plan to present Ari with the opportunity to kill him. Gibbs arrives at his house and to his surprise, Ari has been waiting for him, with Gibbs's rifle, planning to kill him before seemingly disguising the death as a suicide. But just before Ari can kill Gibbs, Ziva who had been at the top of the stairs, listening to the two men talk, shoots Ari in the forehead, killing him. It is only after the encounter between the three of them, that Gibbs discovers why Ziva was so quick to defend Ari: she and Ari share the same father, Deputy Director Eli David of Mossad, making Ari Ziva's half-brother. After all is said and done, the team bid a sad farewell to Kate as she is laid to rest with civilian honors. Before resigning, former NCIS Director Tom Morrow approved Gibbs's request that Todd be awarded the Presidential Medal of Freedom.