In the ruins of occupied Japan, Jon Degnan had loved a beautiful, passionate woman. Together they had shared an idyll of young love. His tour of duty over, he had returned to his fiancee and his career in America. He had left her behind to a savage fate. Twenty years later, Yamada - a rich, powerful businessman - arrived in San Francisco with the sensuous, mysterious Nikko. They were a vision from the haunted past. As Jon reached out to recapture a memory, Yamada plotted a mission of terror. Somewhere, in the bitter darkness of night, a woman cried out for her lost lover. Now only the cleansing passion of revenge could repay....The Obligation.