Caligula (Malcolm McDowell) is an anxious young man. He seems to have lost his moral compass. But that’s understandable. He’s seen his family murdered; then, he himself adds to the bloodshed by offing his adoptive grandfather, the mad emperor Tiberius (Peter O’Toole). He’s conducting an unsavory relationship with his fetching sister Drusilla (Theresa Ann Savoy), ...