was sent by the Abwehr to the U.S., with an assignment list that included specific questions about military facilities in Oahu, including Pearl Harbor. Although British Security Coordination introduced Popov to the FBI, the Americans seem to have paid little attention. It is possible that previous propaganda and forged or unreliable intelligence contributed to J. Edgar Hoover's dismissing Popov's interest in Pearl Harbor as unimportant. There is nothing to show his assignment list was passed on to military intelligence, nor was he allowed to visit Hawaii. Popov later asserted his list was a clear warning of the attack, ignored by the bungling FBI. The questions in his list were rambling and general, and in no way pointed to air attack on Pearl Harbor. Prange considered Popov's claim overblown, and argued the notorious questionnaire was a product of Abwehr thoroughness. Furthermore, the Japanese did not need Abwehr assistance, having a consulate in Hawaii which had on its staff an undercover IJN intelligence officer, Takeo Yoshikawa. The consulate had reported to IJN Intelligence for years, and Yoshikawa increased the rate of reports after his arrival. (Sometimes called a "master spy", he was in fact quite young, and his reports not infrequently contained errors.) Pearl Harbor base security was so lax Yoshikawa had no difficulty obtaining access, even taking the Navy's own harbor tourboat. (Even had he not, hills overlooking the Harbor were perfect for observation or photography, and were freely accessible.) Some of his information, and presumably other material from the Consulate, was hand-delivered to IJN intelligence officers aboard Japanese commercial vessels calling at Hawaii prior to the War; at least one is known to have been deliberately routed to Hawaii for this purpose during the summer. Most, however, seem to have been transmitted to Tokyo, almost certainly via cable (the usual communication method with Tokyo). Many of those messages were intercepted and decrypted by the U.S.; most were evaluated as routine intelligence gathering all nations do about potential opponents, rather than evidence of an active attack plan. None of those currently known, including those decrypted after the attack when there was finally time to return to those remaining undecrypted, explicitly stated anything about an attack on Pearl Harbor. In November 1941, advertisements for a new board game called The Deadly Double appeared in American magazines. These ads later drew suspicion for possibly containing coded messages, for unknown agents, giving advance notice