For the first time ever a documentary unveils from within an investigation led by international justice. Khmers rouges, une simple question de justice (2012) follows the steps of an International Investigative Judge and his team, appointed by the United Nations, in tracking down those responsible for the crimes committed in Cambodia under the Khmer Rouge regime from April 1975 to January 1979, as a result of which nearly 2 million people perished. Shot over a period of 3 years, and backed by interrogatory and judicial reconstitutions on the 'crime scenes', the film reveals the horror of such a regime, helping us to understand the task and stakes of international justice.