connect, an eccentric old woman seeks their company, & an invaluable Vermeer painting disappears. Before they know it, the two find themselves at the center of an international art scanda;l, where no one - neighbors, parents, teachers - is spared from suspicion, As Petra & Calder are drawn clue by clue into a mysterious labyrinth, they must draw on their powers of intuition, their problem-solving skills, & their knowledge of Vermeer. Can they decipher a crime that has left even the FBI baffled?

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