[Ark2]

Originally Posted by djsFlames

Judging by the sound bits in the preview for next week, the idea does fit. It sounds like Jesse is trying to get some truth out of Walt or Saul, and Saul is claiming that something he did in his past he never would have got involved in if he knew it's real purpose. The poisoning of the kid fits that bill quite well. How it gets brought up again, I have no idea for sure. As far as we know that Jesse knows, he has concluded that it was some complete accident. Unless Walt comes clean with him for some reason.

My theory is that Jesse figures out Hank is on to Walt, as Hank will offer him some sort of deal to give him something solid on Walt, but Jesse doesn't rat on him in the interrogation room right then I don't think. Saul probably gets him out and he goes to Walt, and then with the knowledge that Hank's onto him, uses the threat of exposing him to Hank as leverage to get every lie he can out of Walt. Jesse already suspects he's lying about Mike and it's obviously been bothering him. So maybe he threatens to talk if Walt doesn't come clean. And so perhaps Walt comes clean about more than one thing (Mike, Brock, maybe even Jane). Then when Jesse finds out, he has that heated conversation with Saul relating to the poisoning incident. Then it would make sense.

At that point I think he decides to rat on Walt anyways out of pure anger and sense of betrayal.

Jesse would never try to blackmail Walt. He knows that Walt would just kill him like he has with every other person that has gotten in his way.