All book-to-screen adaptations face a common creative hurdle during development — the dilemma of remaining faithful to the source. That has always been the case with Stephen King's work, especially the handful previously deemed unfilmable for various reasons. For example, Gerald's Game takes place largely in the mind of its protagonist, who was trapped in a room, while The Life of Chuck is told backwards in three parts, its titular character notably absent in the first act. After adapting both to overwhelmingly positive reception, horror icon Mike Flanagan reveals his approach to King's magnum opus.