Monako agrees to help Josette's brother Al, who has just perfected a new powerful explosive for the government, from falling into the hands of the evil Mr. Muro.; Dr. Jack Castle begins investigating the disappearance of eight men and the appearance of living corpses, bent on serving a mad scientist whose avowed aim is conquering the world.; Steele helps a nurse, whose life he has just saved, through a series of perilous encounters with the Nazis, in order to get a vital message to the General.; The Kid goes after a gang of raiders that are burning the cabins and stealing the cattle of property owners whose mortgage is coming due.; Nick Bruno kidnaps the girl of the star of the Midwestern College football team in order to win big money on that game and to prevent Midwestern from being invited to the Rose Bowl.; In order to get inside information on crime boss Perrone, Detective Denton takes over the offices of a local doctor so that he'll be in a position to treat Perrone.; Barney takes on the dangerous assignment of transporting a shipment of gold filigree into the war zone of Rotterdam.; Interesting facts are illustrated, such as: some steel used in England's new battleships was scrapped from German ships sunk in WW1; none of the planes currently used in WW2 will be in existence after 20 days of war; the mystery of a new explosive made from wood and air; a pilot thrown from his plane actually fell back into it; and several others.