Season 5 had a unique approach, the main villain was pretty much publicly known early on, but was so well-guarded that it took the entire season to unravel him. It didn't always work, but 5 was very well-paced and usually fairly engrossing. Sure, they essentially retconned Astor and Cody and Lumen out of the show, but I take little issue with those things - the kids were f***ing awful to begin with. Astor was no Sally Draper.
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CRYING. Acceptable at funerals and the Grand Canyon