Despite his sister Ruby's admonitions, Max waits up on Christmas Eve to see Santa Claus coming down the chimney.

Evan and his younger sister, Jesse, react very differently to the news that they will be in the same class for fourth grade and as the end of summer approaches, they battle it out through lemonade stands, each trying to be the first to earn 100 dollars. Includes mathematical calculations and tips for running a successful lemonade stand.

Meg Murry and her friends become involved with unearthly strangers and a search for Meg's father, who has disappeared while engaged in secret work for the government.

Siblings Evan and Jessie must solve the mystery of a missing cherished family treasure while coming to terms with their beloved grandmother's unsettling behavior.

The Aldens, while testing the latest version of their favorite computer game, are surprised to find messages directed specifically at them.

The magic tree house carries Jack and Annie to New York City in 1938 on a mission to rescue the last unicorn.

The Aldens help out at a medieval fair and try to find a valuable sword which has been stolen from the fair.

The Boxcar Children are going to summer camp and are looking forward to a week of new friends, exciting activities, and, most of all, the annual camp Olympics. As soon as camp begins, everything begins to go wrong for the Aldens-they lose their luggage, the camp flag disappears from Henry's cabin, and 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...

When an elderly friend is injured, the Alden children offer to help him with his window-washing business in their small town of Greenfield and agree to help him solve a riddle that has arrived in a mysterious invitation.

The Aldens take part in a hunt at a gem mine and discover that someone is out to sabotage the contest.