George R.R. Martin, photo via Henry Söderlund/WikiCommons George R.R. Martin is conjuring up more dragons for HBO, only this time, they’re not his own creations. The man behind Game of Thrones is executive producing an adaptation of novelist Roger Zelazny’s sci-fi book Roadmarks alongside writer, EP, and showrunner Kalinda Vazquez. Published in 1979, Roadmarks centers on an intertemporal highway constructed by the mysterious Dragons of Bel’kwinith. Off ramps along the route lead to different points in time in different places, with a special few individuals who have access to the Road able to travel between timelines. They can also change events in the past to alter the future, causing old exits to become inaccessible and new ones to open up. Zelazny was a personal friend of Martin before ...