Kirjahaku

A little girl mysteriously disappears from an elementary school playground in Colorado Springs. Sixteen-year-old twins, Shelby and Daniel Anderson, work with the police to try to find the little girl. Will Shelby and Daniel help find the girl before it is too late?

During spring break, Shelby and Daniel Anderson helped the police solve "The Case of the Missing Girl." Now they are back in school, and the principal calls them into her office. She tells them about a secret passageway she discovered behind a bookshelf in her office. Things are also turning up missing in the school. Will Shelby and Daniel be able to solve both mysteries before the end of the school year?

After solving two mysteries in The Mystery of the Secret Room, the Anderson twins go on a cruise with their parents. After getting settled into their new quarters on the ship, Shelby learns from an elderly English woman that one of the dancers on the ship has gone missing. Shelby informs Daniel, and they visit the English woman, who then asks Shelby and Daniel if they would be willing to look for the missing dancer. Can Shelby and Daniel find the missing dancer before the end of the cruise?

Three months after Mystery on a Cruise Ship, Shelby and Daniel go to the Morning Star Ranch to visit their friends from the secret room. While they are there, mysterious things begin to happen. Before long, they find out there is a treasure buried somewhere on the ranch and someone is trying to scare the family off their property. Can Shelby and Daniel figure out who is behind the mysterious things happening around the ranch? Can they find the buried treasure before it's too late?