On June 3, 1943 at the Stone Bridge in Moscow a tragedy took place that shocked the political elite of that time and became the starting point of an investigation into other historical and political facts. Nina Umanskaya, the daughter of a Soviet diplomat, was murdered by her classmate and admirer, Volodya Shakhurin, son of a People's Commissar. After that the young man shot himself. The search for truth of the Stone Bridge incident requires the reader’s patience: the historical authenticity of this work is supported by testimonies of witnesses trying to avoid an uncomfortable interrogation, supported by illustrations, documents and chronicles.