Washoe County Library System

In the first 39 Clues book, Amy and Dan Cahill discovered that they're part of one of the most powerful families in human history. Passing up the hush money, the siblings set out to uncover the 39 clues which would reveal the source of their family's awesome power. In each subsequent book, the siblings attempt to discover one clue at a time. Here, Amy and Dan endanger themselves greatly in the name of a clue when they align themselves with the infamous...

A U.S. military satellite crashes, and a search is conducted to recover its valuable cargo. But, the satellite turns up something chilling: an image of the eastern U.S. seaboard in ruin. Meanwhile, the Vatican receives a package from a vanished colleague. It contains a skull scrawled with Aramaic and a tome bound in human skin. The source of these items: Ghengis Khan, whose tomb allegedly hides vast treasure. Now, Sigma Force must solve a mystery...

Sarah and Aidan begin to decipher a mysterious document that refers to the origins of Peter Pan and are suddenly pursued by a being that can take any form and will stop at nothing to get what it wants from them.