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TV Shows That Went Downhill After Season 1

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20. 'Prison Break' (2005-'09, '17)
Prison Break probably should've ended after its hugely popular first season, but when there's money to be made, nothing's sacred. The Fox series was a smash hit in 2005, as Michael Scofield (Wentworth Miller) schemes to break his innocent brother, Lincoln Burrows (Dominic Purcell), out of jail. The following seasons weren't reviewed anywhere near as well as the first.