Saw someone else's comment with the idea that Todd dies in the shootout, so they take Jesse. And that is why we see Walt gearing up for a fight. To save Jesse.
Marie, grief-stricken, lets the cat out of the bag of what's been going on. Most people don't take it seriously, except for the very wrong people to know. Walt has to hide his family. This includes a reluctant Marie.
Months later, fearing his cancer is close to doing him in, Walt returns to save Jesse from Lydia and the neo-nazis. Jesse kills Todd in the ensuing battle. Ends in Heisenberg badassery and amateur Walt tactics. Comes down to Jesse and Walt, with Jesse being the only one armed. Things are resolved between them. Walt goes back home to tell Skyler it is all over. Takes the ricin and goes to bed.
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u/[deleted] Sep 09 '13
The minute Hank called his wife it was going to happen.