I read Among the Hidden by Margaret Peterson Haddix. It takes place at Luke's House, his room (the attic), and the woods surrounding his family's farm. Luke Garner is a shadow child, a third child forbidden by the population police. He always had to be careful, but now that a housing development is replacing his family's farm he is not allowed near the windows. Worst of all he is not even allowed outside.

One day he sees a girl's face in the window of a house near by. The weird thing about it is two other children already live there. He runs over to her house after everybody left except her. He finds out that her name is Jen, She has access to the internet, and there are hundreds of people just like him, shadow children. He also finds out that Jen's father works for the population police.

Jen wants to rebel at the capitol, but Luke is afraid and stays behind. Jen thought tons of shadow children were coming, but only forty actually showed up and they shot every one of them. After a few days of not seeing Jen he fears the worst. He finally goes over and her father tells him that she was killed. Then he offers Luke a fake I.D. Luke goes on to his new life at boarding school as Lee Grant.