The Black Brothers: An Incredible Story by Heinrich Zöcke is a gripping novel that follows the adventures of a group of boy miners in Switzerland. The main character, Giorgio, is forced to work in a mine after being sold as a mercenary. The support of his new friends helps him survive the difficult conditions of working life and withstand cruel bosses. This book reveals the themes of justice, friendship and courage, leaving the reader on the verge of tears and joy from the hero's successes in his difficult fate.