Kass, Mallory.
Summary: "For the past five hundred years, the Cahills have silently dominated the world. Their desperate hunt for the 39 Clues lies behind some of history’s biggest enigmas--the curse of the Hope diamond, the race to summit Mt. Everest, the wild life and death of Harry Houdini. And now-–finally-–the secrets are out. With an introduction by Rick Riordan, The 39 Clues: The Black Book of Buried Secrets...
Format: text
Publisher / Publication Date: Scholastic 2010