A mysteries underwater cave in Mexico filled with ... human bones. The real evidence behind the long-lost children in the legend of the Pied Piper ... Why "here be dragons" was inscribed on centuries-old maps ...

The next book in this exciting series will cover even more of history's most fascinating head-scratching conundrums, including the puzzling facts behind famous fairy tales and folklore, cryptic creatures of myth and legend, long-lost labyrinths filled with treasures, and so much more. Kids can dig into these mysteries, uncover clues, and ponder leading scientific theories to help decipher what really happened. Chock-full of cool photos, fun facts, spooky fun, and the latest new evidence and leading theories, this book will inspire kids to research like a detective and think like an explorer.