Good Old Secret Seven

The Secret Seven series, created by Enid Blyton and illustrated by Tony Ross, follows a secret society of children who solve mysteries. In the twelfth book, 'Good Old Secret Seven', the group investigates strange occurrences at Torling Castle involving a mysterious figure unsettling the resident jackdaws. This edition, first published in 1960, retains the classic text and includes a Bonus Blyton section with quizzes, puzzles, and other extras. The series comprises 15 books and remains popular among young mystery and adventure enthusiasts.