10 TV Shows That Wasted Brilliant Concepts

10. Heroes - A Gritty Superhero Series 

Running for four seasons between 2006 and 2010, Heroes had one of the sharpest quality declines in television history after its masterful first season, and is today only really remembered for how much potential it ruined, and how much it disappointed its fans.

The story of a group of ordinary people who gain supernatural abilities and grapple with their implications, the ensemble drama was both well cast and extremely rich in its mythology and unconventional superhero narrative.

Unfortunately - though the first season was such a rousing success - the second season was heavily shortened due to the 2007 Writers Guild strike, and its story suffered from a maddeningly slow pace and indulgent exposition from which the rest of the series never recovered.

After the second instalment, audience numbers for Heroes fell, critics lost interest, and the writers were never able to recapture the magic it once had.