User blog comment:Rafe Adler/"Devil's Bargain" Discussion/@comment-1031724-20180209224332/@comment-10889355-20180210022629

Mark Sheppard was written out of the show because the writers don't know what to do with Crowley anymore and that was pretty obvious. I'm glad they gave him a proper ending.

I want to think that Season 14 will be the last but the fact that they're putting old and introducing new storylines on the table make it seem unlikely? But I'm pretty sure they're definitely ending by Season 15 if they push for another season.