Author(s): Rick Riordan

9-12 Years Middle Readers

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 Black Book of Buried Secrets reveals the shocking truth about history's most notorious family, laying bare each hidden fact, concealed strategy, top agent, lost founder, secret base and hushed-up scandal of the Clue hunt.
This complete guide to the Cahills contains information on all five branches, including the notoriously elusive Madrigals.