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TV Shows That Went Downhill After Season 1

6. 'The Walking Dead' (2010-'22)
The Walking Dead will complete 11 seasons when it finally concludes in 2022. And it's had a number of solid seasons, all near the beginning. Season 1 is arguably its best, as we meet Rick Grimes, Daryl Dixon, and the rest of the survivors who eventually become grizzled apocalypse veterans.