Siblings, Julian, Dick, and Anne, wanted to have fun with their cousin, George, and her dog, Timothy. But George owns an island with a secret of having hidden treasure. So the five go out and explore the small island and finally come across clues to the hidden treasure. Then, when George's father sells the clues, the five must prevent the buyers from stealing the gold on the island.
I was very excited by this book. The feelings shown of being kidnapped in the book really made me feel like I was locked away in the dungeon with them too. Another thing that I noticed is that the way they speak in the book is an older, more formal, English. Sometimes I would be confused with how they said things, but after a little while I would understand it.