This podcast episode of "The Rest Is History" discusses the succession of Roman Emperor Caligula. The hosts detail the lack of clear succession rules and the various contenders, focusing on Claudius's unexpected rise to power after Caligula's assassination. Claudius's perceived weaknesses and his eventual surprisingly effective rule are explored, highlighting his use of freedmen in administration and his ambitious public works projects. The episode also delves into the scandalous life of Claudius's wife, Messalina, and the political machinations surrounding her downfall. Ultimately, the episode illustrates how Claudius, despite his perceived flaws, successfully navigated Roman politics and secured his position as emperor, ultimately paving the way for Nero's reign.