Thomas Glover arrived in Nagasaki in 1859, just as Japan was opening to the West. Within a few years he had played a crucial part in the overthrow of the Tokugawa Shogunate, providing the rebels with war-winning, Scottish-designed warships, and modern arms. Bankruptcy at the age of 30 was barely a setback and he went on to become a pivotal figure in the rapidly expanding Mitsubishi empire, founding shipyards and breweries.As energetic in his love-life as in business and politics, Glover had a string of Japanese mistresses, one of whom inspired Puccini's Madam Butterfly. This "Scottish...