Not last night's Fringe but the episode from 2 Saturdays ago, that just became available online, they figured out Jones' plan.
Walter had a dream. So there was a meet up with Walter, Peter, Walter-nate, Olivia1 and Olivia2 and Linclon. Jones is trying to create a 'superrace.' Why? What's his plan? Walter explains his dream. Jones is trying to collapse the two worlds.
Won't that kill him too?
No. When they were trapped in the city (earlier this season), there was a safe spot in that town. Jones has created himself a safe spot that will allow him and his Noah's Arc to survive while the world's collapse.
No one believes him until Walter-nate speaks up saying they should listen. They do but the meeting's broken up by earthquakes. On both earths. It's Jones.
So what's going on. He's trying to break the worlds like Walter said.
A guy goes to Lincoln on Earth 2 to tell him he had a vision. This takes place as video of one woman at the Australia earthquake is seen by Olivia who says that the woman was in the trials with her, when they were kids, where Billy and Walter drugged them.
The guy on the other side comes to our earth. Walter hooks him up to the machine with Olivia and gives the guy a drug. (On our earth the guy was drugged with Oliva. Guy2's vision are really him seeing what Guy 1 is doing on this earth.)
They grab the guy. Olivia tries to reason with him but he leads them on a goose chase. He believes Jones who has told him that the worlds are at war and that the drugged children can save it by causing the earth quakes.
The only way to stop Jones from succeeding is to break the link to both worlds that allows the Fringes on boths sides to cross over. So they do that. As they do, Lincoln decides he wants Olivia2 and he goes over to that side.
That was the episode. I'm assuming we're almost at the season cliffhanger.
Here's C.I.'s "Iraq snapshot:"