Edward of Caernarfon is best known today for his disastrous military defeat in 1314 at Bannockburn, where his English army was defeated by a vastly inferior Scottish force led by Robert the Bruce, leading to Scottish Independence. This catastrophe was one of many in a disastrous career marked by indolence, vengefulness, vacillation in relationships with France, deranged policies at home, and constitutional wrangling, ultimately brought to an end by a minor insurgency led by his vindictive wife and her paramour, a disaffected baron.

Roy Martin Haines examines Edward II's eventful life and the more salient periods of his reign, situating the monarch in the context of the "empire" he inherited and the aftermath of his unregretted death.