Rod and Slugger join the U.S. Navy Reserve and were assigned duty aboard the destroyer "Russell", and their mission was to escort a British vessel safely across the ocean.; When Dan's girlfriend's brother is wrongly accused of murder, he becomes the Manhunter to straighten things out.; Plastic Man stops Professor McSneer's invention, the Eight Ball, which is a rolling destructive machine that attracts precious metals.; Murderous doings around an old Chinese jewel.; Don and Sandra travel to Cuba to investigate subversive activities of European tourists. What they discover is a plan to mine the waters between Cuba and Florida in order to prevent U.S. interference as these men attempt to occupy Cuba.; The Mouthpiece catches up with the Van Deth Brothers in the act of disposing of a body, and, in the ensuing chase, Skul dies after tumbling from a rooftop.