Shadow of the Hegemon by Orson Scott Card -- 451 pages
The War is over. Ender has defeated the Buggers and has joined the group of colonists who have left to explore the Buggers' left-behind homes, but on earth, the crew of brilliant children who were with Ender during the 3rd invasion are scattered among the countries and continents.
As potential weapons and some of the most powerful resources in the world, it becomes apparent that these students won't be living normal lives. Ever. One by one the battle school students are being kidnapped, except for Bean, they simply dropped a bomb on his house.
After a narrow escape, Bean turns to Ender's brother, Peter Wiggin, for help.
I listened to this through Overdrive. The audiobook is well made.