United States and tries to manage his shifting alliances with Karl Heiser, Maria Sorenson, and Baron Ikito. When he learns of Heiser's disastrous romantic dinner with Sorenson, Stauffer has Karl Heiser arrested and baits a trap for Griffin, whom he comes to suspect has made contact with Maria. Despite walking into Stauffer's trap, Griffin manages to obtain the list of agents, and start a fire to cover his escape. Griffin takes the list of agents to Arnold Schmidt for transmission to England. Conrad Stauffer tries to hide the loss of the list from the prying Baron Ikito, who has been staying at the local Japanese Embassy. When Stauffer refuses to answer Ikito's questions, the two confess to each other that German and Japanese cooperation is not one of trust. Without revealing their plans to each other, both men start separate hunts for the Invisible Agent. Griffin steals into a German prison to obtain information from Karl Heiser about a planned German attack on New York City. In exchange for additional information, Griffin helps Heiser escape his imminent execution. Griffin returns with Heiser to Schmidt, who in the meantime has been arrested and tortured by Stauffer. At the shop, Griffin confronts Maria Sorenson, whom he suspects has betrayed Schmidt, and is captured with a net trap by Ikito's men. Heiser escapes detection and attempts to save his life and career by phoning in Ikito's activities to Stauffer. Griffin and Sorensen are taken to the Japanese embassy, but manage to escape during the mayhem that ensues when Stauffer's men arrive. For their joint failure to safeguard the list of Axis agents, Ikito kills Stauffer and then performs seppuku, ritual suicide, as Heiser watches from the shadows. Assuming command, Heiser arrives too late to the local air base to stop Griffin and Sorenson from escaping. The couple acquires one of the bombers slated for the New York attack, and destroy other German planes on the ground as they fly to England. Stauffer's loyal men catch up with Karl Heiser and he is shot. Griffin succumbs to his injuries before he can radio ahead. England's air defense shoots down their craft, but not before Sorenson parachutes them to safety. Later, in a hospital, Griffin has recovered and is wearing facial cream so that he can be visible again. Sorenson appears with Griffin's American handler, who vouches for Sorenson that she has been an Allied