Kass, Mallory.

The black book of buried secrets / 39 clues. The black book of buried secrets. [written by Mallory Kass] ; introduction by Rick Riordan.. - 1st ed. - New York : Scholastic, c2010. - 184 p. : col. ill. ; 20 cm. - The 39 clues ; bk.[12] .

"The Black Book of Buried Secrets" lays 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.

ISBN: 9780545285049

LCCN: 2010929046

Subjects--Topical Terms:
Brothers and sisters--Fiction.
Code and cipher stories.
Family secrets--Fiction.
Inheritance and succession--Fiction.
Orphans--Fiction.