Hundreds of books are published in the field of medieval studies each year. Many offer new and interesting insights into the period and are generally well-received. However, there are also books that can cause a stir among medievalists. Some topics, such as the Crusades or Richard III, often generate considerable debate. Other books have found controversy for different reasons – sometimes bringing in new ideas that have changed the way we think about the Middle Ages, while others have been met with scorn and criticism.