This is volume 6 in Treasure Hunters .

This book has been graded for interest at 9-12 years.

This book was published 2019 by Jimmy Patterson .

CHRIS GRABENSTEIN is the #1 New York Times bestselling author of many books, as well as the co-author of numerous fun and funny page-turners for young readers with James Patterson. Chris lives in New York City with his wife, J. J. , two cats, and a dog named Fred. Ned Rust has also collaborated with James Patterson on "Daniel X: Watch the Skies "and "Daniel X: Game Over. " He lives in Croton, New York with his family.