The Boy in the Striped Pyjamas by John Boyne

We will be reading this in school next year so I was doing a bit of research. A boy moves to a lonely old house in a bleak place, far from his friends. But he enjoys exploring, and eventually follows the fence that goes for miles until he finds another boy. The strength of this book lies in what is not said. I'm not sure how I'll manage this with my class; I surely have read this as an adult, and fear talking about it before we get to the end may spoil it!