The hour opened with Mossad agent Amir Mantel waiting for a contact in a parking garage. A car pulled up and someone he recognized rolled down the window and shot him. Abby later figured out that the communication earpiece he was wearing wasn't from the latest Mossad equipment, so Mantel could not have been working (or at least wasn't communicating) with Mossad at all, despite Mossad Director's assertion that he was, and that a member of a rogue faction from within Mossad had done the shooting.
At the end of the episode we still weren't sure what that was all about.
The Tony/Ziva tease brought us much closer to what so many were hoping to see, but not yet all the way.