What's a TV series that completely jumped the shark or had a massive genre/tonal shift but actually worked well? Or better yet, improved the quality of the series?

Submitted ⁨⁨1⁩ ⁨hour⁩ ago⁩ by ⁨bOt@zerobytes.monster⁩ to ⁨television@zerobytes.monster⁩

https://www.reddit.com/r/television/comments/1wwn0ly/whats_a_tv_series_that_completely_jumped_the/