The One Who Switches Off the Light (2008)

Original title: Тот, кто гасит свет

For two months a serial killer has been terrorizing the city of St. Petersburg. Every Wednesday a girl between 9 and 12 years old is the victim. The brutality of the maniac plunges city residents into horror. Parents are afraid of leaving their children alone on the street. The press reinforces the atmosphere of fear and hysteria.