The book includes three novels about the era of the reign of Ivan IV and his son Fyodor Ioannovich - the last of the Rurikovichs, about the beginning of the struggle for the right to inherit the Russian throne. The first period of the reign of Ivan the Terrible, which ended with the capture of Kazan, is dedicated to the novel "The Third Rome", B The novel “The Legacy of Grozny” reveals the fate of his son, Tsarevich Dmitry of Uglich, who, according to the author, was saved from the hands of the hired killers of Boris Godunov. The history of the change of dynasties on the Russian throne, the accession of the Romanovs, the preceding Troubles and the Polish intervention is recreated in the novel “In the Days of Troubles.”