6. Bones
Bones started to see a dip in its ratings in recent seasons and the series stars had openly suggested its end in early 2016. Its final 12-episode season kicked off in January 2017 and the story of Brennan (Emily Deschanel), Booth (David Boreanaz), and the Jeffersonian FBI team finally reached its conclusion. A new Bones season is not expected in 2018, but some revival rumors have been reported for possibly 2019 onwards.