For decades the story of Ravensbrück was hidden and today is still little known. Using testimony unearthed since the end of the Cold War, and interviews with survivors who have never spoken before, Helm has ventured into the heart of the camp, demonstrating for the reader in riveting detail how easily and quickly the unthinkable horror evolved.

'Using material once locked behind the Iron Curtain, Sarah Helm has performed a tremendous feat of historical rescue: this book at last g...