The Emerald TabletBook - 2016
Finding an old map, Gabe and his friends follow clues to a secret chamber beneath San Francisco, where they perform what they think is a friendship ritual before strange events reveal a sinister cult from a parallel realm.
Publisher: New York, NY : Harper, an imprint of HarperCollins Publishers, ©2016.
Edition: First edition.
Characteristics: 294 pages ;,22 cm.