While helping organize Greenfield's Winter Festival, the Boxcar Children find a secret message in their developed photos. They realize someone is trying to ruin the Festival. Can they figure it out in time to save the event?

While on a South Carolina trip the Alden children agree to hunt for a pirate's hidden treasure, but they face a thief who is trying to find it and keep it.

The Aldens are starring in The Wizard of Oz! But when a costume is sabotaged and threatening notes are left on the set, it’s clear someone wants to stop the show.

Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and are spending their winter vacation at Snow Haven Lodge. The lodge is having its annual winter carnival, and the Boxcar Children sign up to compete in events like skiing, skating, sledding, and building snow and ice sculptures. But no sooner has the competition begun, than the children have a mystery to solve!

The Aldens are spending spring break on a beach, but they aren't just soaking up the sun. They're protecting an endangered species! Their job is to mark sea turtle nests so the eggs can be moved to a safe place to hatch, but someone is digging up the eggs without permission. Can the Boxcar Children figure out what's going on and help save the sea turtles?

Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather and a new computer to play games on! During a visit to a computer game company, the Aldens meet the designers of their favorite game: Ringmaster. When the designers learn the Aldens are Ringmaster experts, they ask for their help. Would the Aldens test the new version of the game before it is sent out to stores? The Aldens gladly agree. But soon, the characters in Ringmaster II are giving the Aldens strange clues about people and places in real life! Is someone using the computer game to tell them something is wrong? The Boxcar Children are determined to find out!

Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and they’re fixing up the old Bugbee House, a spooky mansion in their neighborhood! The Aldens are helping the Heart and Hands group restore an old estate. The house is bursting with collections of its mysterious and eccentric former owner. But when the contents of the house are auctioned off, the Aldens discover that much of the collection is missing! And that’s not the only mystery awaiting the Aldens in this strange mansion. As the children explore, they come across hidden rooms, secret passageways, and strange noises coming from the walls. The Aldens are determined to learn the secret of the Bugbee house . . . but are they the only ones?

Henry, Jessie, Violet, and Benny are happy to share their home with Katya, the young gymnast, and watch her practice for the big competition. When things start going wrong at the gym it quickly becomes clear that someone is trying to ruin Katya’s chances of winning—but who? The Aldens want to help. The trouble is, Katya’s been acting a little mysterious herself—almost as if she’s got something to hide. But what? Can the Boxcar Children solve both mysteries before the big competition?

The old abandoned school in Silver City is being fixed up as an art center and the Boxcar Children volunteer to help clean up the place. But the other volunteers are scared by the spooky goings-on in the school—doors lock by themselves, and chalkboard messages appear out of nowhere! Will the Aldens find out the secret of the haunted school?

When the Boxcar Children help out in a local garden, they dig up one strange thing after another! First, the tomato plants seem to move every day. How can that be? Then the Aldens follow the clues to an unsolved bank robbery, and it’s clear that a very big mystery is growing in Greenfield!

Benny figures out some puzzling events in a department store.

The Boxcar Children offer to help Aunt Jane's friend, Kay, fix up her run-down motel.

The spooky old house on Surprise Island intrigues Benny.

The Mystery at the Ballpark There’s a mystery at Greenfield’s ballpark. A special bat goes missing, Jessie’s favorite glove disappears, and the team almost doesn’t make it to their first game. Can the Boxcar Children save the team? The Mystery of the Hidden Beach While the Aldens are in Florida they find a beautiful hidden beach then learn that it’s full of secrets. Once again, the Boxcar Children must find the truth. The Summer Camp Mystery It’s time for the camp Olympics, but someone isn’t playing fair. Are some campers so desperate to win that they’re willing to cheat? The Boxcar Children are determined to solve the mystery before the competition is ruined for everyone!

The Mystery of the Singing Ghost *  * Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and are excited because their cousins are moving to Greenfield. The Boxcar Children decide to fix up the house that cousins Joe and Alice have bought. There’s just one problem. It seems to be haunted—by a ghost that sings! Is someone trying to keep Joe and Alice from moving in?  The Mystery of the Mummy’s Curse *  * Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and they’re about to meet a mysterious mummy! The Greenfield Museum is holding a special exhibit all about ancient Egypt, and the main attraction is a 4,000-year-old mummy. The Aldens are helping the museum curator set up the exhibit and learning all about life in ancient Egypt. But ever since the mummy arrived, nothing’s gone right for the museum or its workers. The longer the Aldens are around the mummy, the more things go wrong. As the children search for the cause of all the bad luck, everything points back to the spooky sarcophagus. Has the museum been struck by the curse of an ancient mummy? The Aldens are about to find out, whether they’re ready or not!  The Mystery at Skeleton Point *  * When Grandfather’s friend bought Skeleton Point, she invited the Alden children to help her fix it up. But this empty mansion is even spookier than it looks. The man who used to live there studied bones—and the house is filled with skeletons! Then the mansion’s valuable statues begin to disappear. Could the Skeleton Point ghost be causing mischief?