On August 12, 1978, a delegation from the Swedish-Kampuchea Friendship Society arrived in Pol Pot's Democratic Kampuchea. Returning home, the four Swedes said that the communist revolution of the Khmer Rouge should serve as an example for other countries. The world community soon learned that during the three and a half years of Pol Pot's rule, the country lost a quarter of its population: almost two million people were executed or died from hunger, backbreaking slave labor and disease. But how could it be that no one in the world raised their voice in time against one of the bloodiest regimes of the second half of the 20th century? Almost a quarter of a century later, the writer Peter Fröberg Idling read the enthusiastic report of the Swedish delegation and decided to conduct his own investigation. The result was the book “The Smile of Pol Pot”, which became a sensation in Sweden and has already been translated into several languages.(12+)