"Granite State," the show's penultimate episode, ends when a despondent Walter White sees former Gray Matter associates Gretchen and Elliott Schwartz, who became wealthy while he floundered in an unchallenging, low-paying career, dismiss his contributions to their success in a TV interview. This enrages Walt, who decides to settle old scores back home before his cancer finishes him off. Only Walt's wounded pride could get him out of his stupor, it seems.
The first order of business: get as much money to his family as possible. This isn't easy, since said family now hates his guts and the Feds are just praying he'll show up at Skyler's with duffel bags of cash. So Walt has to get creative. In the series finale "Felina," he breaks into the Schwartz home, has a terrified Gretchen and Elliott help him pile cash on their table, and then tells them to donate it to Walt Jr. and Holly in the form of an irrevocable trust and explain to anyone who questions it that they pitied Walt's blameless children. If they didn't, the "two best hitmen west of the Mississippi" (in reality, Badger and Skinny Pete outside with laser pointers) would assassinate them.
We're not sure how realistic this is, since Gretchen and Elliott could've gone to the cops afterward, or someone might've rightfully suspected this random cash infusion had Walt's fingerprints all over it. But it sure made for some great TV and a satisfying conclusion to the Gray Matter subplot.
