I saw that and have no memory of what it was about.
But it was the same with Mr. Mercedes and it didn't take me too long to get caught up in the second season.
I remember what Under the Dome was about - it's all there in the title - but wish I didn't and can't believe I wasted so much time watching it.
One failure isn't going to kill Stephen King. I will probably watch the new one on video.
Also, The Goldfinch (not by him). "Failure" at the box office doesn't necessarily mean a picture wasn't worth making or seeing.