Gravillet Tsesarovich

End of the 20th century…

Unknown assailants blew up the gravillet "Tsesarovich" with the heir to the Russian throne on board. The investigation is led by Prince Trubetskoy, a colonel in the Ministry of State Security. Communists are involved in the crime, and the prince is forced to fight not only against the criminals but also his own beliefs. The evidence leads Trubetskoy to the German Empire, where a lonely scholar is preparing an unimaginable, in terms of morality, experiment..