"During summer vacation the cousins are excited to visit their grandparents on Hidden Horse Ranch. They get to sleep in a bunkhouse, swim in a pond with a rope swing, and ride horses any time they want. But they arrive to find that a mysterious fire has destroyed the stables, and the herd has escaped into the nearby canyons. Also troubling, valuable objects have been disappearing from the ranch house. As Jeff, David and Claire follow clues and suspects, they keep running into dead-ends and wonder if the ranch has a phantom. Will they be able to find the theif and solve how the fire started before more danger strikes?"--from back cover
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