The secret of the three sovereigns (Set of 2 books)

The action of the novel begins on March 14, on International Day of the "Pi". A young historian, a researcher at one of the museums of St. Petersburg, seems to conduct an ordinary study. He is interested in a strange similarity in biographies and the main milestones of the reign of three Russian sovereigns - Ivan the Fourth Terrible, Peter the Great and Paul. The historian tells about his guesses to the backward military who works in the protection of the museum - and from that moment their fate is inextricably linked. Without knowing it, the historian disturbed the secret, for which they have been hunting for more than two and a half thousand years around the world, and to solve it in St. Petersburg.
Heroes are forced not only to crunch with brains, but also to hide: the powerful special services, adherents of the ancient knightly orders and the leaders of the secret world government go along their track. Nobody cannot believe, and in a kaleidoscope of bright adventures, each can be the last. The plot is replete with historical paradoxes, sophisticated riddles and unexpected turns, holding the reader"s tense attention from the first to the last page