The Boy in the Striped Pyjamas

The Boy in the Striped Pyjamas is a novel written by John Boyne. Bruno's father is a commandant in World War II and the family moves house to Out-With so that he can work closer to concentration camps under the Fury's orders. After staying there for some time, Bruno makes friends with a Jewish boy named Shmuel on the other side of the fence. They meet up on their side of the fence whenever they can. On the day where Bruno is meant to move back to Berlin, he accidentally enters a gas chamber while attempting to look for Shmuel's father and dies while holding hands with the Jewish boy.
There is a movie of the same name based on it on August 28, 2008.