Atop the black mud of Auschwitz that swallows everything, Fredy Hirsch has built a secret school. In a place where books are banned, young Dita hides under her skirts the fragile volumes of the smallest, most remote and clandestine public library that has ever existed. Amid the horror, Dita gives us a wonderful lesson in courage: she doesn't give up and never loses her will to live or to read because, even in this terrible extermination camp, 'opening a book is like getting on board a train taking you on holiday.' A moving novel based on real events that rescues one of the most touching stories of cultural heroism from oblivion.