Children outsmarting adults
The police search for Uncle Quentin and find nothing, while four children work out where he is and get him back. The adults either dismiss the children or fail to see what is under their noses, and the villains make the same mistake, underestimating them at every turn. Blyton's point is plain: children see clearly because they are not distracted by pride or procedure. The book hands its young readers the satisfying idea that courage and observation matter more than age.
Characters:Uncle Quentin