The Web [John Raymond] (criminology professor, introduction); Rose Wayne (Raymond's future wife, learns The Web's secret identity, introduction); General Mason (death); The Black Dragon (villain, introduction); Japanese spies [Lin Chow; rest unnamed] (villains, introduction for all, many die); Nick Morro (villain, big-shot gangster, introduction); Morro's gang (villains, introduction for all)
A dead man found in a burned car, identified by John Raymond as the missing General Mason, has been murdered by The Black Dragon. Raymond changes into the Web to track down the villain, but in the process inadvertently leaves clues that Rose Wayne has found, through which she discovers that John Raymond is the Web.
Black Jack [Jack Jones]; The Black Seven [Omar; rest unnamed] (villains, introduction for all); Hussein and his six sons (father and brothers of Black Seven, all die)
The Black Seven is born as seventh son of a seventh son, and that is a bad sign. He becomes a symbol for fiendish cunning and murder. When he is out to steal secret documents from the Turkish ambassador, he meets up with Black Jack.