by Dan Jolley (Author)
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.
Format: Paperback
Pages: 320
Edition: Reprint
Publisher: HarperCollins
Published: 10 Aug 2017
ISBN 10: 0062411667
ISBN 13: 9780062411662