Amalia Tamarina returned from America in triumph - on assignment from a special service, she found a missing painting by Leonardo da Vinci. She was accepted by the Sovereign Emperor himself, and the prospects looked most rosy, but something that no one could have expected happened - terrorists threw a bomb at the carriage of Alexander II and killed the Tsar-Liberator! The young detective could not stay away from the investigation, especially since she and her family were drawn into the intricacies of court intrigue. Amalia will definitely get on the trail of who is behind this terrible crime! And a new acquaintance will help her - guards officer Alexander Korf...