Dexter — "Remember the Monsters?" (2013)

The lumberjack ending of Dexter's original run was so universally mocked that Showtime created an eight-episode revival to fix it, only for Dexter: New Blood's finale to generate fresh outrage. A 2014 poll of 2,000 fans rated the original ending 2.1 out of 10, which is 1.3 points lower than the average score for #1 The Sopranos' divisiveness (3.4). The revival cost $48 million to produce, 20% more than the typical season, yet its finale still received a 40% disapproval rating from viewers, proving some characters cannot be sent off satisfactorily. This series holds the record for worst finale-to-series average rating drop among Showtime shows, at 2.4 points, outperforming #3 Game of Thrones' drop of 1.8 points in sheer dissatisfaction. A quantified comparative shows that 68% of fans rated New Blood's ending as 'disappointing,' a figure 15% higher than the average for revival finales.