Prisoner B-3087 by Alan Gratz

Yanek Gruener is a Jewish boy in 1930s Poland when the Nazis invade. Everything he has and everyone he loves is brutally taken from him. And then Yanek himself is taken prisoner, his arm tattooed with the number B-3087. Forced from one nightmarish concentration camp to another as World War II rages around him, Yanek encounters evil he could never have imagined–and yet finds surprising glimpses of hope amid the horror.

10 different concentration camps. 10 different encounters with death.

Can Yanek make it through the terror without losing his hope, his will, and, most of all, his identity?

Based on the astonishing true story of one extraordinary boy.