David Douglas's book touches on one of the most controversial moments in the medieval history of Western Europe - the Norman conquest of England. It tells in detail how the powerful Duke of Normandy William and his army crossed the English Channel and landed in the south of England, captured London and gradually subjugated all of England. The Duke of Normandy became a full-fledged king and went down in history under the name William the Conqueror. The author gives an in-depth analysis of the political situation of that time, again turning to sources in order to understand the fruits of the deeds of the descendant of the harsh Vikings.