Some canyons hold deep, dark secrets... others should never be found.

Thirteen-year-old Sandy is just trying to enjoy a family vacation at Grover Canyon State Park with her younger brother, Pete. But when the two of them stumble across a hidden underground laboratory deep beneath the canyon floor, everything changes.

Inside, they find a corpse -- waxy, lifeless, and slouched at a reception desk like it's been waiting for something.

Terrified, they run. But the horror they've uncovered is only beginning.

Something has been awakened beneath Grover Canyon. And before the day is over, Sandy, Pete, and everyone else in the park will come face to face with a nightmare no one saw coming.

The Horror at Grover Canyon State Park is a standalone supernatural thriller in the Between Dark and Light middle-grade horror series.

Perfect for fans of Goosebumps, Small Spaces, and creepy mysteries for ages 10 and up.

• We started tracking this book on September 19, 2023.
• This book was $0.00 when we started tracking it.
• The price of this book has changed 17 times in the past 677 days.
• The current price of this book is $2.99 last checked 14 hours ago.
• This lowest price this book has been offered at in the past year is FREE.
• The lowest price to date was FREE last reached on July 16, 2025.
• This book has been FREE 9 times since we started tracking it.
• The highest price to date was $2.99 last reached on July 21, 2025.
• This book has been $2.99 9 times since we started tracking it.
• This book is currently at its highest price since we started tracking it.

• Children's eBooksScience Fiction, Fantasy & Scary StoriesFantasy & MagicParanormal, Occult & Supernatural
• Children's eBooksScience Fiction, Fantasy & Scary StoriesScary Stories
• Children's eBooksAction & AdventureAction & Adventure

• Text-to-Speech: Disabled
• Lending: Disabled
• Print Length: 161 Pages