Professor Georgia Challenger is still in pursuit of the Mad Scientist School Boys, and our girl won't quit until they are all found and done for. Plucky and perspicacious is our girl Georgia, and she is using every weapon in her arsenal. Georgia must use all she has, for her enemies will employ every trick in the book against her. With the help of the fierce Lady Claudette Roxton, Georgia's sister, she tracks down the every sinister villain she's set herself upon, and no one will get away. Georgia even calls upon help from her foster children when she must, even if it means the have to fight it out knife to knife, and with tooth and claw in jungle and rain forest, or warships so bizarre they ought not ever have risen from the murky depths of the sea bottom's deepest trench. Wherever Georgia must go chasing the last of these miscreants, she is there: the Swiss Alps, a Miami Beach house, or even the heart of a living volcano. Georgia tinkers to make new toys, whether these are electric bullets or highflying spy planes. Whatever Georgia needs to catch her quarry, our girl will make it. She may chafes at accepting unsolicited help, yet our girl Georgia hasn't got too much pride for that. This is the third installment of the Professor Georgia Challenger series, and concludes the first cycle of the story that began with 'Challenger Intrepid' and continued in the second volume: 'Challenger Immortal'. This is an exciting Science Fiction novel with enougth elements of Horror and Fantasy to boggle any reader's mind.