After 7 seasons, 'The Mentalist' was canceled - here's the inside scoop on why the hit crime drama had to call it quits.
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Ratings took a nosedive in the later seasons, with viewership dropping from 19 million to just 8 million by the finale.
Producers and the network couldn't agree on the show's creative direction, with CBS pushing for a more procedural format while the creators wanted to evolve the storylines.