Bruno takes Shmuel's hand and tells him he's his best friend. Bruno couldn’t hear Shmuel's answer.
The door closes and the room goes very dark.
Nothing more was ever heard of Bruno after that. Several days later, the soldiers search the house, local towns, and villages for the disappeared Bruno. All they can find were his clothes.
His mother didn’t return to Berlin quite as quickly as she had hoped. She stayed at Auschwitz for several months waiting for news of Bruno until one day returned to Berlin, thinking he'll be there. He wasn't there.
Gretel returned to Berlin with Mother and spent a lot of time alone in her room crying