The Boy in the Striped Pajamas

Intriguing story from a 9-year-old's perspective.  In the early 40's Bruno's father is promoted to Commandant and sent from Berlin to a remote area in Poland.  Out his bedroom window he sees a fenced-in area where there are thousands of people, and hundreds of children in striped pajamas.  He befriends one of the boys and develops a relationship over a period of time because he has no other children with whom to play.