Grey Griffins: The Brimstone Key, Paperback

A brand new adventure starring The Grey Griffins
Max---the leader
Natalia---the brains
Ernie---the changeling
Harley---the muscle

A year ago, Max, Natalia, Ernie, and Harley were just regular kinds from Avalon, Minnesota, but that was before they learned that evil faeries, werewolves, and other unthinkable monsters existed just beyond our world. Now they are the Grey Griffins: monster hunters, celebrated heroes, and allies to the legendary Templar Knights--but even heroes have to go to school.
This year, they're attending Iron Bridge Academy, a school where students learn to fight against the forces of evil. Here, the Griffins find themselves in a whole new adventure when The Clockwork King, a Templar foe from the past, returns with a deadly plan.

About the Author:

Derek Benz and J.S. Lewis have been best friends since they could remember. They grew up sharing birthday parties, Saturday morning cartoons, comic books and baseball cards, and spent much of their childhood exploring the sprawling woodlands behind Derek's family farm, which they secretly suspected was enchanted. They are the authors of three previous books featuring The Grey Griffins: The Revenge of the Shadow King, The Rise of the Black Wolf and The Fall of the Templar.
Derek Benz currently lives with his wife and son in New Jersey.
J.S. Lewis lives with his wife and daughters in Arizona.