When glowing crystals begin to appear all over Cedar Creek, the Firefly Five know something big is happening—something Amos Cutter never meant to be found.

Sidney, Judy Faye, Billy Lloyd, Linda Nell, and Kay Beth follow the strange stormglass trails deep into the mountains. Their search leads them to the abandoned Frost Hollow Mine, where long-buried machines hum beneath layers of frost and flame.

Inside, they discover the Chamber of Fire, the heart of Cutter's most dangerous experiment. The Radiance that once powered his inventions has awakened again—and it's hungry. As light turns to flame and the mine trembles around them, the Firefly Five must uncover the truth about the Storm Glass before it consumes their entire town.

Can friendship withstand the fire?
Can courage survive the storm?

The Storm Glass Mystery is the fourth adventure in The Firefly Five series, blending mystery, friendship, and courage into a story that glows with excitement and heart.

Perfect for readers ages 7–12 who love:
✨ Fast-paced mystery and teamwork
🌪️ Hidden tunnels, lost experiments, and thrilling discoveries
🔥 Friendship that shines brightest under pressure
🌈 Stories of science, courage, and imagination

The Firefly Five are back—and this time, the light they're chasing could be their greatest discovery... or their biggest danger yet.