This is a breezy story in the classic Mad Scientist mold, complete with a Beautiful Daughter. The eccentric Dr Harwood, spurned by the scientific community, continues his experiments on contacting other dimensions at home, with predictably disastrous results. As bad as things seem, they're even worse than that, and it's up to a clever engineer to save both daughter and planet Earth from the catastrophe Harwood has unleashed.
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Acknowledgements: Robert Silverberg for cause, support, and cooperation; Ken Seamon for graphics; Rodney Walters for books and info; Alvaro Zinos-Amaro for comments and content; and all the fellow fans who have sent encouragement, information, and translations.