Sidney Core's Secret is a young adult novella that takes place in the mountains of Colorado. Claire, 14, through whom this story is told, and her younger brother, Jake, look for answers in the rocks of a favorite hiking area they know as The Crags. Sidney Core, their uncle, who has become something of a wild, mountain man, and a woman who disappeared some twenty years ago, are at the center of the mysteries Claire hopes to untangle.
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