Henry, Jessie, Violet, and Benny are given the opportunity to be extras in a movie about the Alamo, but they are called upon to use their sleuthing skills when Claire, the star of the film, is implicated in the theft of a valuable ring.

Strange things are happenikng at the Wagner Farmhouse, and the Aldens' new friends are being blamed. Is the house haunted by the ghost of practical joker Horace Wagner? Or is someonme trying to destroy the museum's chances for success?

While spending their winter vacation at Snow Haven Lodge, the Boxcar Children sign up to compete in the snow events. But no sooner has the competion begun, than the children have a mystery to solve!

The Boxcar Helpers baby-sit, wash cars, mow lawns, and care for pets to raise money for Greenfield hospital. But Beth keeps disappearing and other things start to go wrong. Is someone trying to put them out of business?

While on a camping trip with their grandfather, the Alden children try to find out about the loud music and missing food that threatens to scare away other campers.

While visiting Lake Lucille in the Adirondack Mountains, the Aldens hear stories about a monster in the lake and then encounter evidence that it may be real.

When the Aldens go to the Pickering Natural History Museum to assist with the opening of a dinosaur exhibit, their work is hampered by a series of mysterious happenings.

The boxcar children travel to Maine, take canoes into the wilderness and live in a house exactly like the one on Surprise Island, except the Maine house is brown, not yellow. They untangle the mystery of the two houses. 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...

The Alden children, isolated in a storm at a small bus station, are led into a mystery centering on a polluted river.

On a camping trip to Arizona with their grandfather, the Alden children search for a lost gold mine.