Solve the mystery with the Secret Seven - everyone's favourite detective club! These timeless stories are perfect for young fans of mystery, adventure or detective series.
In book fifteen, the Seven are determined to help out. They are very fond of Tolly and his sick horse, Brownie and need to find them somewhere to hide out - somewhere that dangerous horse thieves will never think to look. But where?
Solve the mystery!
Cover and inside illustrations are by the brilliant Tony Ross, illustrator of David Walliams's books. The story was first published in 1963. This edition features the classic text and comes with a Bonus Blyton section at the back with quizzes, puzzles and other bonus extras!