Takeo Yoshikawa (1912-1993) was an ensign in the Imperial Japanese Navy and a naval intelligence officer assigned the task of spying on the U.S. Pacific Fleet at Pearl Harbor. Assuming the alias "Morimura" and the role of secretary at the Japanese Consulate-General in Honolulu in March of 1941, Yoshikawa was able to travel all over the Hawaiian Islands to gather intelligence. His reporting during the nine months preceding the outbreak...