This podcast episode explores the trial and execution of King Charles I of England. The hosts, Tom Holland and Dominic Sandbrook, discuss their initial thoughts on Charles I and his legacy. The guest speaker, Ted Vallance, provides a more in-depth analysis of Charles I's reign and execution. They delve into the complexities of the English Civil War, highlighting the interplay of religious and political factors that fueled the conflict. They also explore the role of Charles I's character in the conflict with Parliament and discuss the challenges faced by Charles I during his reign. The episode examines the reasons why Charles I risked a second civil war against the New Model Army, the sentiment within the army and Parliament to put him on trial, and the options available to Parliamentarians after the defeat of the Royalists. The radicalization of the New Model Army and the subsequent trial and execution of Charles I are also discussed, as well as the significance of the Parliament's Declaration of Supremacy and the location and trappings of Charles I's trial.