https://www.amazon.com/Search-Monster-Griffin-Ghostley-Adventure-ebook/dp/B01F85KUBA
SEARCH FOR THE SILVER SWAMP MONSTER
A Griffin Ghostley Adventure - Book #1
For readers ages 10 - 13
Sixth grader Griffin Ghostley has a lot on his mind today. One intriguing map. Three head-scratching clues. Oh, and a water-dripping, vine-wrapped swamp monster out to defeat him. Can Griffin solve the three clues in time to help him unlock a mysterious vault in the abandoned Kensington Circle Corporation building that is the key to everything? With the help of Mindy Mayhew, his friend and classmate, and his three canine companions, he'll certainly try. But first they must follow the map to an old barn, a pumpkin patch and a graveyard if they plan to succeed--and all under a full moon on Halloween night!
This is the first book in a planned 12 book series.