The Secret friends have been invited to Prince Paul's palace in Baronia for the holidays. The mini vacation turns bad when the palace gets a visit from a band of robbers.
Summary of the Book
Prince Paul, who goes to the same boarding school as Jack and Mike, invites his friends for the holidays. However, a band of robbers decide to terrorize the people living in the countryside. It is up to Paul and his friends, Mike, Peggy, Nora and Jack, to stop the thieves and have them detained. They find a tunnel that leads them to the secret forest and discover that this is where the robbers have been living. As the place is inaccessible to people, they would never be found.