Soviet writer Grigory Grebnev (1902-1960) - author of a number of novels and short stories of a science fiction and adventure direction. The fantastic novel "Arctania," which tells about the polar station hanging in the air, is an alloy of fiction and reality, conveys the anxiety of waiting for the fascist attack on our country. The action-packed adventure story "The Missing Treasure" is dedicated to the scientific and historical problem of finding the library of Ivan the Terrible.