What happens to tony in season 9 of NCIS?

I bought the NCIS 1-9 DVDs and I am now in the third season. i've seen the season 9 advert on the FX channel and it mentions something about tony doing something, and the others wondering what he's doing..

A3: The best way to answer your question is this: You need to see the last 5 episodes of season 8, with the Port-To-Port killer storyline, to understand the situation with Tony. The last episode, called Pyramid, will lead into season 9, but I am not going to tell you what will happen to him and you should check it out by yourself.

comes from: https://twitter.com/christinajey/status/223347702782627840
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