1, 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 HarperCollinsPublishers, 
Edition: First edition
Branch Call Number: Ju F Jol
Alternative Title: Emerald tablet