The Conscience of Nhem En is a 26-minute documentary directed by Steven Okazaki, telling the stories of three survivors of the Tuol Sleng Prison.

The film follows a young soldier responsible for taking the ID photos of thousands of people before they were tortured and murdered by the Khmer Rouge.

[1] Nhem En was 16 years old when he was the staff photographer at the Tuol Sleng Prison, also known as Security-21, where from 1975 to 1979 approximately 17,000 people were registered and photographed, then imprisoned and tortured before being killed.

Bou Meng, 34 years old at the time, survived because the prison needed an artist to paint portraits of Khmer Rouge leader Pol Pot.

Chum Mey, 42 at the time, survived because he could fix sewing machines.