The Rock N Roll Mystery: The Aldens are helping Greenfield's most popular band get ready for a music festival. A big-time music producer will be there to watch the show, and everyone in Greenfield is hoping the band will be famous soon. The day before the festival, the band's instruments are stolen! Can the Aldens find the instruments - and the thief - before the big show? The Secret of the Mask: The Aldens are preparing for a yard sale when they find an old wooden mask in the trash behind a neighbor's house. Violet notices that the mask looks like a Native American mask she had read about. When the mask is stolen, the children begin to think their newfound treasure may be worth a lot to someone. Can the Aldens find the thief and the mask before it's too late? The Seattle Puzzle: The Aldens are on vacation in Seattle! On their first day of sightseeing a mystery falls right into their laps when Benny finds a riddle taped to the bottom of a table. What does the riddle mean, and where will it take them? Follow Henry, Jessie, Violet, and Benny as they crack the mysterious riddle on their way through the Emerald City.