The path for literary adaptions usually goes book to movie or book to TV show, or maybe book to movie to video game. Unless, of course, you’re Willie Block and Jake Emanuel, the co-authors of the post-apocalyptic sci-fi thriller mystery The Edge Of Sleep, which went from podcast to TV show to novel (available in hardcover, Kindle, or audiobook). In the following email interview, Willie and Jake discuss what originally inspired and influenced this story, and how the print edition of this story is different from the one you already heard or saw.