The fourth book of Tacitus' Annals has been described as the best that Tacitus ever wrote. It covers the years AD 23-28, starting when Tacitus noted a significant deterioration in the principate of the emperor Tiberius, and the increasingly malign influence of his evil genius Sejanus. R.H. Martin and A.J. Woodman present an improved text of Annals IV, explain in detail the difficulties and unusual features of Tacitus' Latin, and discuss the dramatic,...