S21: The Khmer Rouge Killing Machine (2003)

S-21: The Khmer Rouge Killing Machine (French: S-21, la machine de mort Khmère rouge) is a 2003 documentary film directed by Rithy Panh. Rithy, himself a survivor of the Khmer Rouge, brought together two former prisoners of the regime with their former captors at Tuol Sleng Genocide Museum, the former Security Prison 21 (S-21) under the Khmer Rouge.

Synopsis

Vann Nath and Chum Mey, two survivors of the Khmer Rouge's Tuol Sleng Prison, are reunited and revisit the former prison, now a museum in Phnom Penh. They meet their former captors – guards, interrogators, a doctor and a photographer – many of whom were barely teenagers during the Khmer Rouge era from 1975 to 1979. Their appearances are in stark contrast to the two former prisoners, who are both elderly men. Vann Nath, who was made to paint portraits of prisoners, has a full head of white hair.