As a child, Thet Sambath lost his parents and his brother to the brutal regime of Pol Pot. It was a tragedy he shared with countless other Cambodians across their small country – the survivors of a genocide with more than one million deaths through political executions, starvation and disease.
On a mission to grasp murder on that scale, Sambath spent a decade tracking down and winning the confidence of the Khmer Rouge’s No. 2 man, Nuon Chea, living as a free man near the border with Thailand.