I always had a funny feeling about Sarah, but because of Phineas getting along famously well with Gibbs I've never gave a 2nd thought to it..
Odette was acting weird too, but I'm glad that Ziva's judgement wasn't off when it came to her.. Odette testing Bish kind of made sense, I wonder about the outcome if that proposition? It could be interesting to see Bishop working on more undercover assignments in the future..
I've read quite a few theories about Phineas. I don't think that he's old enough to be Ari's... I think, he has either been kidnapped when he was a baby or is the nephew of Ari... Because him calling Gibbs "Jethro Gibbs" can be cute but also strange as well...
I feel sorry for Adam that they couldn't save him... But I also think that they gave him a nice ending, with dying for the one that he always loved, no matter what...
Lastly, I think that the episode in January will focus on Gibbs & Phineas and on Ziva finding Tony & Tali since they went into hiding