Can the Terror Twins overcome the mighty power of harnessed lightning...
The Black Terror [Bob Benton]; Tim [Tim Roland]; Jean Starr; Schmulz (villain, introduction, death); four fellow Nazi prisoners (villains, introduction for all)
Herr Schmutz has been broken out of prison in order for him to use his scientific knowledge to improve on the distance and range of the Electro-Destroyer, which can project electricity to kill enemy troops.
Wilbur Daly; Arthur Daly (private detective, Wilbur's father); Butch Maynard (villain); Maynard's men (villains)
Wilbur is at his father's detective agency, guarding several sets of keys when a thug enters with a gun, takes a set of keys, and forces the young boy to accompany him......but not before the boy left a clue for his Dad.
Marty Thorn; Dave Norton (ranch foreman); Chief (villain); gang of rustlers (villains)
Having just received a genuine rattlesnake hat band from foreman Dave, 13-year-old Marty joins a trail herd taking some cattle to market twenty miles away. He didn;t know it then, but that hat band would later save the day!
General Jerry Monahan (Clinton's father); Clinton Monahan (military school Cadet Commander); Curt Mannheim (villain); un-named German agents (villains)
Clinton had learned from his father the use of sandbox models to work out real military problems, and that knowledge is put to use when German agents enter his home to search for valuable documents his father may have kept there.