Mengele's Apprentice (Mengele's Apprentice Book 1) by Roberta Kagan

Set during the harrowing backdrop of World War II, this gripping historical novel explores the dark depths of human cruelty and survival. It follows a young protagonist thrust into the horrifying realm of Nazi medical experiments under the notorious Josef Mengele. Through resilience and courage, the story unveils the harrowing trials faced by prisoners in the darkest chapters of history.