Filmmaker Vincenzo Natali ("Cube," "Splice"), who has recently been helming various episodes of NBC's "Hannibal," has used social media to post some of the early concept art and pitch work that was created for some of his unmade movies. On the list includes an adaptation of Stephen King's "It," the comic "Swamp Thing," William Gibson's legendary cyberpunk novel "Neuromancer," and an entry in the "Predator" franchise.