I remember reading this when I was in high school for one of our classes and I've lost count of the amount of times I've seen the film. This time I had to reread this for one of my degree modules. It was just as heartbreaking, possibly more so as you knew what the ending was going to bring. The little phrases about Bruno and Shmuel planning to meet when they both left Out-With made me want to ball.
There's something incredibly interesting in using children to tell a narrative such as this one. They are afforded a certain leniency to ask questions, be honest and share their opinion without repercussion for the most part. Bruno asks his mother a lot about the different people working in their household and she can't explain to him why this is. Looking at it in one respect it was almost as though she was ashamed of her involvement. Contrasting her with Lieutenant Kotler who was more than happy, and in fact delighted in the cruelty the Final Solution wrought.