Can there be a connection between the ancient Maya and Aztec states and medieval Rus'? Of course not, the heroine of Anna Bart's novel "The Crown of the Sovereign" is sure. But an ordinary university employee is about to do more than just visit Yucatán and survive deadly adventures—she will also manage to read the pages of a long-buried past that have been carefully hidden from people and find out whether the legendary crown of Russia's tsars really exists…