A little girl falls down a rabbit hole and discovers a world of nonsensical and amusing characters.

The Boxcar children have dinner at a Chinese restaurant and get a handwritten riddle in a fortune cookie! One riddle leads to another, and the children wonder who is leaving the cookie clues and why.

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

When the Aldens visit friends in Vermont, they're in for a teddy treat, the annual Bear Jamboree, celebrating toy bears from all over the world! The Aldens soon encounter an unbearable mystery: a very rare and valuable bear has disappeared from the toy hospital. Now it's up to the children to track down the teddy thief?

While visiting an aquarium in Florida, the Aldens discover that the Ocean Adventure Park's great white shark has a very human enemy.

Malcolm, a smaller than average rat, loves life at McKenna School and the secret society of classroom pets that keep children out of trouble, but when Aggy the iguana disappears Malcolm must use all of his ratty persistence to prove his innocence and save her.

The Alden children have discovered a mystery close to home, their beloved boxcar home. The old train car where they once lived is now a playhouse in their backyard. One night, Benny sees a strange light in the boxcar, and the children begin to find clues to the boxcar's past.

When the Aldens have the chance to work at a candy factory, they try to find out who is sabotaging the candy and why.

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...

Henry, Jessie, Violet, and Benny are getting strange notes from a mystery messenger! An art gallery in Greenfield is hosting a contest, and the whole town is talking about a talented new painter who is bound to win. But then an unknown person called "the