The Castle Under the Mountain

In The Castle Under the Mountain, bestselling, award-winner Pari Thomson opens a new door to the magical world of Greenwild in this thrilling adventure for World Book Day 2027. Beautifully illustrated in black and white by Elisa Paganelli. Perfect for readers of 8 to 12.

Fen loves spending summers in Scotland with her grandfather. Among soaring mountain peaks, secret smugglers’ caves, glittering lochs and wild waterfalls, there’s always something new to explore. Equipped with brilliant gadgets she invents herself, Fen is ready for any adventure.
But when she stumbles through a mysterious door hidden in the mountainside, she finds herself in a world beyond her wildest imagination.

Welcome to the Greenwild: a magical land where a colossal castle sits beneath the mountain, the orchards are full of living jewels, and magic sparkles out of every root, leaf and stem. But in this astonishing land, a mystery is afoot . . . and Fen might be the only one who can solve it.

Praise for Greenwild:

Winner of the Overall Waterstones Children's Book Prize
Blackwell’s Children's Book of the Year
An Instant New York Times Bestseller

"Phenomenal . . . If you don’t believe in magic, you will after you’ve read Greenwild." - A. F. Steadman, author of Skandar and the Unicorn Thief

"A spellbinding, enchanting read full of wildness and beauty." - Hannah Gold, author of The Last Bear

"A truly wonderful book that children will love." - M. G. Leonard, author of Beetle Boy

"A glorious, page-turning adventure filled with botanical magic" - Aisling Fowler, author of Fireborn