The Alden children head to their aunt's ranch for the summer and make an amazing discovery! Adapted from Gertrude Chandler Warner's story of the same name, this early reader allows children to start reading with a Boxcar Children classic.

The Aldens climb a mountain and find a mystery! The hike up Old Flat Top was only supposed to take a day, but a dangerous rockslide changes everything to reveal a hidden cave that just may hold a legendary treasure!

Two brothers take summer jobs at a department store where a series of peculiar events brings them under suspicion.

The orphaned Alden family children, now living with their grandfather on his island, are intrigued by the mystery of the nearby empty yellow house. Not satisfied to leave its 40 year old story unfinished, they uncover a trail of clues that leads them to the woods of Maine.

The Alden children hunt for their late grandmother's necklace that has been missing for years.

When the Aldens visit Yellowstone they discover a map showing the way to an old cabin where gold is supposedly hidden, but they encounter lots of interference in their attempts to hike the trail.

The Boxcar children investigate the disappearance of a student's research paper from an observatory and the subsequent disappearance of another student.

While staying at the Crooked House, the family home of their housekeeper Mrs. McGregor, the Aldens try to solve a riddle that will lead them to a hidden treasure.

The Aldens are spending a week at Camp Seagull on beautiful Claw Island. But as soon as camp begins, they realize that someone is not playing fair. Everything begins to go wrong for the Aldens — they lose their luggage, Henry misplaces the camp flag, and the campers on the other team use one of Jessie's ideas to score points for themselves. Are some campers so desperate to win the Olympics that they are willing to cheat? The Boxcar Children...

When the Aldens help a friend of their grandfather's to build the world's largest yo-yo, they soon discover that more than one person is trying to prevent them from finishing the job--and for more than one reason.