The Vanishing Passenger: The Aldens are at the Greenfield train station to meet their favorite mystery writer! Gilbert Finch has agreed to come to their library and meet all of his fans. But when Finch’s train arrives, there is no sign of him anywhere. The famous author has vanished! Will the Boxcar Children be able to find him?

The Giant Yo-Yo Mystery: The Aldens are helping a local carpenter build a giant yo-yo that could break a world record! But when plans are stolen, it’s clear someone doesn’t want this yo-yo to be built. Can the Boxcar Children save the day?

The Creature in Ogopogo Lake: The Aldens are visiting Grandfather’s friend Abby in Peachland, Canada — home of the mysterious lake monster called Ogopogo. When the children learn that Abby must sell her resort unless she can attract more business, they decide to help. But someone or something is trying to get in their way. Can they save the resort?