Books published by Random House Children's Books

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 find the coin's owner, but a saboteur is again hot on their heels and nearly spoils their hard work. Next up the Aldens travel to frigid Antarctica, where they need to return an artifact to the hut Shackleton used on his expeditions to the South Pole. The trip is a success, but when the Aldens return, they learn the identity of the person who has been trying to ruin their plans. Will the saboteur keep them from returning the seventh and final artifact?

The Aldens visit their cousins Joe and Alice, who live near an amusement park! The park has games, cotton candy, and a beautiful old carousel with wooden horses. But then Benny notices one horse isn't working and his favorite dapple gray has been damaged. Why would someone sabotage the carousel?

The Aldens start a helper service with their new friend,Beth, to raise money for the Greenfield Hospital! But Beth keeps disappearing when it's time to help. Then someone tears down their signs and lets the air out of their bike tires. Who would want to sabotage their fund-raiser?

Now vacationing with their grandfather in the South Seas, Henry, Jessie, Violet, and Benny are supposed to be on an uninhabited island. But they soon suspect someone else is there too, someone who may not want them around.