This volume offers an extensive introduction to 6th-century Byzantine historian Procopius of Caesarea, widely regarded as one of the last great historians of Antiquity. Procopius’ monumental oeuvre is our main contemporary source for an array of highly significant historical developments during the reign of Justinian I (527-565), ranging from warfare with Persia in the East and the reconquest of large parts of the Western Empire from the Goths and Vandals to aspects of social and economic history.