Season 8

Beckett giving Castle the cold shoulder isn't helping ratings much. Fans are tired of the bad writers always splitting up the couple.

New showrunners come in and completely ruin Castle in its eighth (and final) season. Castle and Beckett’smarriage is broken up as Beckett seeks to protect her loved ones from a secret investigation that she launches into a crime syndicate that murdered her former FBI team; meanwhile Castle re-opens his PI business to work cases with the NYPD and win Beckett back. The break-up plot is incredibly dumb and just becomes more infuriating as it goes on. And although Beckett is supposedly promoted to precinct captain, nothing really changes as she pretty much continues on in the same role. There is, however, one good change to the show with Castle’s daughter becoming an associate in his PI business. The tone of the series also takes a downward turn, though not as one would suspect. In spite of the dark and serious themes, the show becomes more comedic with Castle at his most fanciful and goofballish (which is another problem). A series killer, Season 8 of Castle is complete garbage that fans rejected in mass and is best forgotten.

DO NOT WATCH if you are emotionally related to Rick and Kate!

It's confirmed episode 22 will be the end. This show has been cancelled