Recommended for children who enjoy mystery and adventure books. The book is filled with interesting characters, picturesque descriptions of Peru, and enigmatic secrets to uncover along the way. The unique feature of this book is its relatable story that combines the mystery of the missing friend, the archaeological search, and the adventure of climbing mountains.

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Geronimo's adventurous sister Thea narrates this fabulous adventure that's packed with action, mystery, and friendship!In this amazing adventure, Thea's friends the Thea Sisters head to Peru, where a good friend of Paulina's is in danger. There, the five mice climb the Andes mountains in search of a mysterious treasure that's hidden in the Secret City of the Incas. Readers will love following the clues to help the Thea Sisters solve the mystery!

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