Reading this thread is far more entertaining than the last 4 sesons of Castle.
I'd never heard of either Fillion or Katic before this show, but like many of you I fell in love with Caskett, so I am devastated by the news.
I'm not going into the BTS debacle since I have no reliable sources on which to base my opinions, but I do blame writers for some of their choices,
After all "Cops and Robbers", one of the top episodes of all seasons had very few moments with the two leads together. Couldn't subsequent writers come up with equally creative ideas?