Banner Comics #4

Captain Courage battles foreign spies who have infiltrated an army camp and stolen plans for a revolutionary motor-stopping device vital to America's defense. After Private Carter presents his invention to a general, he becomes suspicious of the device's security and discovers sabotage in progress. With the help of Kay McKay, Captain Courage fights off the spies at a secret naval base hidden on a Japanese-mandated Pacific island, ultimately freeing diplomats held hostage and thwarting the enemy plot.