Tamaki Matsuoka, a Japanese elementary school history teacher who during the last 28 years has tried to find out just exactly what happened in Nanking during the Nanking Massacre (December 1937 - January 1938). During this process, she has become a journalist, researcher, and activist. She interviewed more than 250 former Japanese soldiers who fought in Nanking during that period, and over 300 Nanking Massacre Chinese survivors. She has traveled between Japan and China more than 90 times during this period.