Secret Seven Win Through

£250 · Offered by Goldsboro Books

In book seven, the Secret Seven have a fantastic new hiding place, but somebody else has been using it too. Whoever it is is going there at night, and the gang are determined to catch the cheeky intruder, whatever it takes Solve the mystery!

• Binding: Hardcover

Found via Rare Books Intel, a search across rare-book dealers, auction houses and marketplaces worldwide.