You wouldn’t know it by the title of the series, but “Chapelwaite” is based on a Stephen King short story, “Jerusalem’s Lot,” which serves as a prequel of sorts to the author’s very famous novel, “Salem’s Lot.” But now that everything King has ever put to paper is being adapted for film or TV, it was only a matter of time before the “Jerusalem’s Lot” story was made into a big-budget series for EPIX.