I say end it before they kill it with bad writing. Last episode felt like a good ending , till Duke started shooting out troubles out his eyes. So one more season to wrap up the troubles, happy ending and now 5 years of syndication for Syfy. IF all they do is drag out the trouble of the week episodes indefinitely it will suck. Especially after delving into what caused the troubles, where they came from & the real reason for the barn. Now if they want to go into the other universe and tell us about that and why Maura and her Mother lived so long compared to us , I could see getting another year or two. But you just can't go back to the trouble of the week story and act like all that never happened.