Rosemary’s Baby started the pot boiling, but the publication of The Exorcist and The Other threw gasoline all over the stove. Whether it was a reprint from 1949, a reissue of Dennis Wheatley black magic books from 1953, or a brand-new novel, soon every paperback needed Satan on the cover and a blurb comparing it to The Exorcist or Rosemary’s Baby or The Other.