According to Playbill, Stephen King is working on a play called The Ghost Brothers of Darkland County. It's about two feuding brothers who go with their dad to their old, family vacation cabin. They haven't been there since they were kids, and they encounter the ghosts of their dad's older brothers who also fought, but killed each other in the cabin many years earlier.
That's a cool enough story premise, but it's made cooler by the fact that it's a musical and that the music was written by John Mellencamp. Little haunted houses for you and me.