Dave is coming into his own. He's building rockets, observing comets, designing a telephone system, and he has a job on Sundays, a paying job at the park where his dad umpires local baseball games. If Dave can save up enough money and scrounge the needed materials, he's planning to build a fancy, first-rate "crate." Life is good. Then comes murder, and Dave becomes entangled in the web. Can he and the neighborhood gang find the solution to the mystery while constrained by "the rules?" Does the country's very existence hang in the balance? Will evil win out, or will Dave and his friends come to the rescue?
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