The book "Lives of the Twelve Roman Emperors. Volume 03: Tiberius" was written by the Roman historian Suetonius and is the third in this series of biographies of the Roman emperors. In this work, the author tells in detail about the reign of Tiberius, one of the most famous emperors of the Roman Empire. It describes the life of Tiberius, his activities in the political arena, his character and relationships with other influential personalities of his time. The book provides a unique opportunity to better understand the personality and reforms of Tiberius, as well as their impact on the history of the Roman Empire.