“Dalla sovranità del Parlamento alla sovranità del popolo. La rivoluzione costituzionale della Brexit” by Justin O. Frosini, is a book that can be read with growing curiosity, page after page, and this seldom happens when it comes to a scientific monograph. The Author guides us through a historical, political, and institutional path revealing their inner causes, investigating the implicit features, complexity and cryptotypes of the English constitutional system.