In 18th-century continental Europe, penal law and what passed for justice were barbaric: gallows were a regular feature of the landscape, branding and mutilation were common, and there existed the ghastly spectacle of people being broken on the wheel. To make matters worse, offenders were often tortured or put to death for quite minor crimes and often without any semblance of a proper trial. Like a bombshell, a book entitled On Crimes and Punishments exploded onto the scene in 1764 with shattering effect. Its author was a young man from a privileged background, named Cesare Beccaria (1738-1794). A central message of that now classic work was that such punishments belonged to 'a war of nations against their citizens' and should be abolished. It was a cri de coeur for thorough reform of the law affecting penal law and punishments, and it swept across the continent of Europe like wildfire, being adopted by one ruler after another. It even crossed the Atlantic to the new United States, into the hands of President Thomas Jefferson. Civilized penal law remains a highly topical issue, and this book examines where it all began, with the influence of Cesare Beccaria.