Gertrude Chandler Warner
14) Mike's mystery
15) Blue Bay mystery
In this all-new very special mini-series, the Aldens have been recruited by a secret society to return lost artifacts and treasures to their rightful locations—all around the world! After finding a painted turtle figurine, the Aldens are introduced to the Silverton family and Reddimus Society, a secret guild whose mission is to return lost artifacts and treasures to the sites they were taken from. The Aldens board a private train to New Mexico
...In this all-new very special miniseries, the Aldens have been recruited by a secret society to return lost artifacts and treasures to their rightful locations—all around the world! The Aldens chart a course for Sydney, Australia, and as the children tour the famed Sydney Opera House, their next puzzle—and its key—falls right into their laps. They need to find the rightful owner of a rare Australian coin. Using their knowledge about Australia,
...The Aldens are spending their first week of summer at Camp Quest in Colorado. The children are excited to learn about fossil hunting and paleontology from renowned scientist Dr. Iris Perez. But strange events at the camp make them wonder if the legends of a bigfoot-like creature roaming the valley might be more fact than fiction. Can the Aldens help Dr. Iris figure out who—or what—is causing such a stir?