For fans of Steve Berry, Dan Brown, Robert Harris and Kate Mosse's historically accurate thrillers, a riveting page-turner questions if the Romanov dynasty really ended, suggesting the 'one designated by blood' may still be alive.

Ipatiev House, Ekaterinburg Siberia, July 1918: On the eve of his execution, in a desperate attempt to save the Romanov Dynasty, Tsar Nicholas II signs in secret his last Ukase, an irrevocable royal edict, bestowing untold riches and power on his legitimate heir, 'the one designated by blood'.

New York City,...