Relates the exploits of the four Alden children as they locate a missing man. The Boxcar children are determined to solve the mystery that surrounds an old yellow house on their grandfather's property. Strange things have happened in that house where long ago a man disappeared.

The classic story of four orphaned siblings, Henry, Jessie, Violet, and Benny, who find an abandoned boxcar in the forest and decide to make it their home--

The Alden children meet Mike Wood and a strange chain of events begins. Mike's house is mysteriously burned down, a man in a blue hat appears, and the Alden's uranium mine is in danger of being sabotaged. The four children solve the mystery.

A family starts out on a one-day mountain climbing excursion that becomes very exciting. In fact, it becomes an adventure for the former "boxcar" family. They unearth some mysteries and have a fine time in the process.

While on a bicycle trip to their aunt's farm, the four Aldens help solve a mystery.

"Henry, Jesse, Violet, and Benny Alden take a trip down the Mississippi River and stay in a haunted cabin! At least it seems haunted--there are spooky phone calls, flickering lights, and strange shadows. Is there a ghost in the cabin? Join the Boxcar Children in their graphic novel adventure as they solve the mystery of the haunted cabin!"--Back cover.

People line up around the block to buy Mama Tova's cupcakes. But who could be trying to steal her secret recipe? The Boxcar Children follow clues to a cupcake contest, where they must use their mystery-solving skills to find a thief.

A young Canadian visitor helps the Alden family solve a mystery involving a lost coin collection.

The Alden children discover another mystery when they agree to help injured Mr. Yee tend to his plot in the community garden and find out that vegetables are going missing and plots are being vandalized.

The Alden children save an old woman's house, land, and all the animals in her animal shelter from greedy contractors.