Sub-Mariner Comics#14(1944)

A supply ship is leaving England to the Italian front. As it sails the ocean it passes through a mysterious black fog that puts the entire crew into a near death state. They are found later by a surveillance plane. When the story reaches the mainland it is read by both the Sub-Mariner and Betty Dean. The both part company, with Betty going to cover the news on the African front, while Namor goes searching for clues as to the origins of the strange smoke. His search of the oceans lead him to a Nazi submarine which attacks him. Although the Nazis manage to blast a torpedo at him, it merely stuns Namor who rips the sub to shreds. Searching the dead Nazi's for clues, he finds a log book with the coordinates where the next attack can be found. Realizing it is the exact location that Betty's ship will pass through, Namor swims off to intercept her ship. Arriving in the area, Namor spots Betty's ship and attempts to board it. It is suddenly enveloped in the fog. Namor's Atlantean physiology prevents the fog from having a full effect on him, only stunning him for a short time. Checking for Betty, Namor is relieved to find her and some of the crew were unaffected by the fog due to being in the bridge, which was up higher than the fog. When Nazi agents board the fish, Namor attempts to fight them off but is knocked out from behind by a blow to the back to the head. He, Betty and the surviving crew members aboard a massive submarine. There they are brought before the ships captain, Baron von Wetzel. He tells Namor that he intends to use his new gas to win the "Battle of the Atlantic" for the Nazis. He then places Namor into a heat cabinet to die. As they approach a Red Cross vessel, Wetzel places a bucket of water in view of Namor to taunt him. However, Betty manages to knock it over, splashing its contents on Namor's face and revive his strength. Breaking free from his bonds, Namor fights off the Nazis and sinks the vessel, killing all aboard while he and Betty swim to the Red Cross vessel to be rescued.