Porky Hog steals radium from the hospital to build a great destructive weapon.; The Beetle investigates a businessman's death. The only clue is a miniature painting.; Dr. Krug uses gorillas coated in dynamite to take over the city. Well that was the plan anyway.; Gagon has stolen a machine that can cause explosions from a distance and demands the keys to the state bank or he'll blow up the city.; The Crime Dealer threatens to blow up the Brandt hotel unless blackmail is paid.; Zonn, a foreign agent, uses his radio compass to blow up arms shipments.