Groosham Grange / The Unholy Grail

Firefly & Fern Summary

Groosham Grange is a delightfully spooky adventure where a young boy discovers his new boarding school is far from ordinary—it's actually run by ghosts and supernatural forces. Blending humor with genuine thrills, this book offers readers a thrilling escape into a magical world where nothing is quite what it seems, and where courage and cleverness help solve mysterious puzzles.