The Clockwork Chronicles Series by Derek Benz, J.S. Lewis

A brand new adventure starring The Grey Griffins!Max---the leaderNatalia---the brainsErnie---the changelingHarley---the muscle A year ago, the Grey Griffins were just regular kids from Avalon, Minnesota. That was before they learned about the existence of evil fairies, werewolves, and other things that go bump in the night. Now they are monster-hunters, celebrated heroes, and allies to the legendary Templar knights---but even heroes have to go to school... moreA brand new adventure starring The Grey Griffins!Max---the leaderNatalia---the brainsErnie---the changelingHarley---the muscle A year ago, the Grey Griffins were just regular kids from Avalon, Minnesota. That was before they learned about the existence of evil fairies, werewolves, and other things that go bump in the night. Now they are monster-hunters, celebrated heroes, and allies to the legendary Templar knights---but even heroes have to go to school. When the Griffins enroll at Iron Bridge Academy, a school to train young recruits in the fight against the forces of evil, they find themselves at the center of a whole new adventure. The Clockwork King, a Templar foe from days past, has returned to finish the plan he set in motion decades ago. A plot to steal the souls of changelings---humans infused with fairy blood and supernatural abilities---in order to power his army of clockwork war machines. In The Brimstone Key, authors Derek Benz and J.S. Lewis deftly blend the mystical wonder of steampunk with magic and adventure to create an action-packed thrill ride. less

In just one semester at Iron Bridge Academy, The Grey Griffins have already had quite an education-clockwork robots, students with super powers, and a hidden land beyond our world where mystical creatures and incredible inventions exist. But as second semester begins, their friendship is put to the test-Max, Ernie, Natalia, and Harley are growing apart... moreIn just one semester at Iron Bridge Academy, The Grey Griffins have already had quite an education-clockwork robots, students with super powers, and a hidden land beyond our world where mystical creatures and incredible inventions exist. But as second semester begins, their friendship is put to the test-Max, Ernie, Natalia, and Harley are growing apart. When their arch nemesis Otto Von Strife reemerges with another evil plan, the Griffins must learn to set aside their differences and reunite to save the world. And each other. less

<!--StartFragment--> A new world means a world of trouble... The Paragon Engine, a machine that can unlock portals to any dimension throughout the universe, is the most powerful and dangerous invention in Templar history-and the Grey Griffins have just been pulled through it. After they are transported through the engine, Max, Ernie, Natalia, and Harley have no idea what to expect. There could be vicious monsters or terrifying creatures lurking around every corner... more<!--StartFragment--> A new world means a world of trouble... The Paragon Engine, a machine that can unlock portals to any dimension throughout the universe, is the most powerful and dangerous invention in Templar history-and the Grey Griffins have just been pulled through it. After they are transported through the engine, Max, Ernie, Natalia, and Harley have no idea what to expect. There could be vicious monsters or terrifying creatures lurking around every corner. But soon, they discover that this new world looks just like theirs. Except there is one big difference: everything that went wrong in their world never happened and the Templar rule society. Is this world truly perfect? Or should the Griffins risk their lives to find a way back home? Things get even more complicated when they learn that their arch enemy, Otto Von Strife, is also in this world-and he has the power to destroy everything. In this final book of the Clockwork Chronicles trilogy, the Grey Griffins face questions about destiny, personal choice, and what courage really means-all while finding a way to destroy Von Strife, his evil half-fairies, and his legion of killer clockworks.<!--EndFragment--> less