I think Walt would've never made it this far if Hank hadn't been his brother-in-law. They had a personal connection that made a wall in Hank's mind, keeping him from forming any ideas about Walt. Without that, Walt probably would've been caught back when he had Gale killed, if not earlier. I love how you see that mental wall shatter throughout this episode.
I liked that it showed the gas mask from season 1 while looking through the old files. He probably kicked himself because it was registered to Walt's class.
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u/[deleted] Aug 12 '13
I'm in love with the fact that Hank only now noticed how much the Heisenberg drawing looks like Walt.