Caligula (1979)

Pagan Rome, 37 A.D. As the frail, syphilis-ridden, and half-mad Emperor Tiberius nears the end of his reign, Prince Gaius Augustus Germanicus, known as Caligula, arrives at the depraved ruler's palace of sin on the island of Capri. Following the murder of the bedridden Tiberius, Caligula ascends to the throne as the new emperor. Then, he proclaims Julia Drusilla, his beloved sister and lover, as his equal, much to the disgust of the Roman Senate. Now a dangerous megalomaniac, Caligula declares himself a god. As he embarks on a four-year reign of debauchery and terror, Caligula betrays alliances, destroys virginities, and weeds out the competition through torture and execution. However, how much longer must the Roman Empire tolerate the uncontrollable mania of the insane tyrant?