Sleuths of the Russian Empire are investigating the mysterious disappearance of a unicorn. A team of geneticists managed to breed this wonderful animal in a daring scientific experiment. Series "Cozy Empire", cycle "Sleuths of the Russian Empire", book 1. The main characters of the cycle are agents of the 7th Branch of Her Majesty's Personal Office, investigating crimes against animals. The bloodhounds work cheerfully and naturally, in the style of the charming Archie Goodwin and the magnificent Sir Max from Echo... Although they have never heard of these characters - after all, our heroes live in an alternative Russia. Here magnetic levitation trains fly over St. Isaac's Cathedral, a three-dimensional printer prints women's hats, a bus regularly runs from Gatchina airport to the Moon, and the Empress's father assembles a crew for a flight to Mars. Instead of magic in this world there are powerful technologies, seasoned with charming traditions of the 19th century.