When I watched the preview and the scene of when Elizabeth gets shot, it reminded me of when Zander shot Elizabeth. Jason and Zander fought over the gun and Zander pulled the trigger and the bullet grazed Elizabeth's arm. So who pulls the trigger - Dr. O or Nik? Who comes to Elizabeth's side?

There was an old spoiler about the viewers seeing the events leading up to something and how the story was playing backward but once an event happened we would see the story move forward. Need to go back and check old PCI spoilers/clues.

thanks GQfan4E for the avatar