At dawn on 12 August 1944, German SS troops arrived in the Tuscan mountain village of Sant'Anna di Stazzema. On arrival, they proceeded to murder up to 560 Italian civilians in the olive groves and chestnut woods of the small hamlet. The victims were women, the elderly, and more than eighty children. One was a baby barely three weeks old. It was the most high-profile massacre committed by the Germans in Italy - and yet, despite three separate war crimes investigations, the Sant'Anna killers escaped justice.