Keeper of the Gremkat Key

Legend of Galivett, Book One

By: Brad Lyon, John Lyon

Narrated by: Josh Innerst

A strange metal cylinder. A three-foot-tall bug-man. A dangerous world beneath the earth.

Eleven-year-old Harper Graybridge never expects that one junkyard discovery will launch him into an underground realm filled with bizarre creatures, ancient ruins, and secrets powerful enough to change his life forever.

When Harper meets Lyt—an insectoid traveler searching for the mysterious “keeper”—he’s offered the adventure he’s always dreamed of in the subterranean world of Murkmor. But Murkmor is far from safe. Poisonous jelly-monkeys stalk the forest, giant worms double as underground slides, and an evil overlord named Baron Vyndot believes Harper’s discovery is the key to unlocking a long-forgotten legend.

With the help of Lyt and a fierce bird-warrior named Crowll, Harper must navigate deadly tunnels, crumbling ruins, strange new allies, and a villain determined to control Murkmor’s most dangerous secrets.

Courage, friendship, and quick thinking may be the only things that can get him back home—alive.

Perfect for listeners who love:
imaginative underground fantasy worlds
creature-filled adventures
fast-paced, thrilling action
friendships forged under impossible circumstances
middle grade heroes facing danger with heart

Keeper of the Gremkat Key is a wildly imaginative, creature-packed middle-grade fantasy perfect for fans of adventure, humor, mythic worlds, and unforgettable heroes.

Begin the adventure. Discover Murkmor.

©2024 Mane Brain Studios LLC (P)2025 Mane Brain Studios LLC

Critic reviews

Awards

Gold Medal Winner – Readers' Favorite Awards 2025

First Place – The BookFest Spring 2025

Finalist – Colorado Authors' League 2025

Finalist – National Indie Excellence Awards 2025

Winner – Best Indie Book Awards 2025

Family friendly and lots of fun. This was a blast!

The authors created a really fun and unique world. Didn’t take itself too seriously yet also managed to find a nice balance between fun adventure and a heartfelt/serious reality. Looking forward to the next book in the series!