Barcoe Jenks, the nervous and eccentric financier, enlists Tom's aid to travel to Colorado and determine the method of making artificial (and perfect!) gemstones -- the secret of this method having been used as bait to defraud Jenks of a large sum of money.
Don Sturdy on the Desert of Mystery
Victor Appleton
bookDon Sturdy on the Ocean Bottom
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bookDepth Perception
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bookTom Swift and His Airline Express
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bookThe Blurred Blogger
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bookAugmented Reality
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bookThe Spybot Invasion
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bookThe Drone Pursuit: Tom Swift Inventors' Academy, Book 1
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bookThe Sonic Breach
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bookThe Virtual Vandal
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bookRestricted Access: Tom Swift, Inventors' Academy
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bookTom Swift and the Electronic Hydrolung
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audiobook