In the previous episode, Troy seemed to almost make it by for targeting Christina who is obviously the woman on the outs. She nearly survived the vote when it turned out to be 4 for Troy 3 for Christina and 1 for Chelsea.



That doesn't seem to be what the previews show though. In the previews, Sabrina seems to be gunning for Kat because she doesn't trust her anymore and Kat is talking about voting for Sabrina. The ironic thing is when they are saying these things they are talking to Kim. This proves that Kim and Chelsea still hold all of the power in this episode.
My prediction is that Tarzan will pull what Chris from Vanuatu did for a while and let the women turn on each other. He will either win immunity or dodge the bullet and it will turn out to be either Sabrina, Kat, or Christina going done on Wednesday.
Also, an important note for this episode would be Kim still has the idol in hand! This guarantees herself to make it to at least the next round or to the final five if she saves it. In my opinion if Sabrina, Kat, Christina, or Alicia want a shot at winning the MUST turn on Chelsea and Kim now!