"The Aldens are making the journey to their Aunt Jane's house for an overnight bicycle trip. On their first night, though, the children are caught in a rainstorm. They have to take shelter in an old, abandoned house. There, a most unusual mystery--a lost dog--finds them! Can the boxcar children figure out the mystery of where the dog belongs?"--P. [4] of cover.

The Aldens learn there is buried treasure on Blizzard Mountain while they are helping to map a new trail.

While visiting Pikesville, the Boxcar Children join the exciting last games of the season in a strange old ballpark behind an abandoned factory. But the Eagles are hitting too many home runs. Could they be cheating? Then Violet sees strange lights in the factory. Could the lights--and the home run streak--have anything to do with the sad Pikesville legend of Home Run Herman?

Following clues provided by the secretive Reddimus Society, the four Alden siblings travel to a dingo sanctuary in Australia and to Shakleton's hut in Antarctica to deliver the fifth and sixth artifacts, and then they work to unmask the traitor traveling with them.

Four orphaned and homeless siblings happen upon an abandoned boxcar, which, with a little creativity and hard work, they gradually furnish with all the comforts of home. Fearful that they will be sent to live with the reputedly cruel grandfather they have never met, the children keep their new home a secret.

4-in-1 sampler featuring the first book in four classic young reader series