by Orson Scott Card
As a sequel to The Swarm and a prequel to the Ender series, the world is facing another battle with the Formics, an alien civilization. They seem to be controlled by a hive queen, who gives them orders telepathically. They are very bright and very curious about the human race. However, they are also dangerous, and seem to be motivated in destroying Earth for their own purposes. There is no conclusion at the end, so the author will probably continue the series.