Warner Bros. is evidently happy with director Doug Liman's work on Edge of Tomorrow as they'll be bringing him back to adapt the YA sci-fi novel, Railhead. Written by Philip Reeve, the story is set in a futuristic world (of course) where "trains run through space via portals." The main protagonist will be a "petty thief hired to steal an object that happens to be more important than he was led to believe, setting off an adventure that could change the course of the galaxy.”