The books in this section are usually hardcover and in decent shape, though we'll sometimes offer hard-to-find books in lesser condition at a reduced price. Though we often put images of the book with their original dust jackets, the copies here won't always (or even often) have them. If that is important to you, please call ahead or say so in the order comments!
This revised vintage edition has black and white picture end papers.
Two unexplainable plane crashes near an airport on the East Coast plunge Frank and Joe Hardy into a bizarre case. From the moment Frank and Joe find a radioactive engine in an airplane junkyard, unexpected dangers strike like lightning. Despite the repeated attempts on their lives, the teenage detectives pursue their investigation, discovering two vital clues and others that provide the solution to one of the most baffling mysteries the boys and Mr. Hardy have ever encountered.
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