The producers acquired the rights to Rick Yancey's proposal for a sci-fi novel trilogy, with Sony Pictures likely on board to co-produce and distribute. The story centers on a young girl who is one of the few to survive a massive alien invasion, as she goes out to find her missing brother. The aliens can disguise themselves as humans, and the boy who helps her on the quest may or may not be one of these extraterrestrials in disguise.
Rick Yancey's book proposal was pre-emptively sold to Putnam Books. It is not known when the books may be published. The adaptation does not have a screenwriter attached at this time.