These timeless stories are perfect for young fans of mystery, adventure or detective series. Also available in audiobook! It's their first adventure and the Secret Seven super-sleuths are already on the trail of a mystery!

The gang are dressed in disguise, following a lead to a spooky old house in the snow... 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 1949.

This edition features the classic text and comes with a Bonus Blyton section at the back with quizzes, puzzles and other bonus extras!