Agent Emily Prentiss is assigned to the unit as the team looks into two serial killers who seem to be competing against each other.
After Tony's confrontation with Rivkin, the team fly to Israel for a final showdown, but they aren't exactly welcomed by Ziva's father, the head of Mossad. Gibbs has to make a tough choice as the situation gets even more complicated.
The crew try to help a soldier wounded by mercenaries in Iraq, but they can't be sure just how high up the cover-up goes.
When a Neptune High senior's behaviour markedly changes, Veronica investigates the commune-like cult recently joined by the student. She attempts to rebuff a killer's claim.
When the most-hated man in Miami is murdered, the team search both for the killer and for hidden treasure.
