(Paperback, Reprint)

Seventh-graders Sloane and Amelia are devastated to be paired for a research project about long-lost jewels, but soon they are finding clues hidden for nearly a century--and realize they are being used.

(Paperback, Reprint)

Sloane and Amelia clash with rival detectives when they travel to Tangle Glen mansion with the goal to find the two million dollaws that went missing on the premise decades ago.

(Paperback, Collected Set)

(Paperback, Reprint)

Thirteen-year-olds Sloane and Amelia embark on their first paid detective job to find a time capsule buried on the grounds of Cedar Point Amusement Park, but encounter opposition from a vengeful schoolmate, the park manager, and a ghostly figure.

(Hardback)

Seventh-graders Sloane and Amelia are devastated to be paired for a research project about long-lost jewels, but soon they are finding clues hidden for nearly a century--and realize they are being used.