If you believe Hugh Howey, the television adaptation of his postapocalyptic book trilogy Silo may never get released, despite the millions of dollars and thousands of man-hours Apple TV has thrown at the production. Sure, the dystopian drama--which stars Rebecca Ferguson, Tim Robbins, and Rashida Jones and was produced by Justified creator Graham Yost--has a release date of May 5, and the show has already premiered at Cannes and in London, but the author still isn't ready to call it a done deal. "To be honest," Howey says, "it's still a gradual process. I think it'll probably hit me on June 30, the day the finale airs. Even when I walked onto the set of the show for the first time in England, I was like, 'Oh, my gosh, are we really doing this?'" It's an understandable feeling, given Silo's long road to the screen.