Nuclear power engineer, who has worked at nuclear power plants for many years. Readers G. Medvedev is known for the published books "Impulses," "Operators" and "Moment of Life," dedicated to employees of nuclear power plants. In the new journalistic book "Chernobyl Chronicle," the writer impressively talks about the tragic events in the first hours and days of the nuclear disaster at the fourth power unit of the Chernobyl nuclear power plant, about the fatal mistakes and heroism of people on that tragic night of April 26, 1986.