The Aldens are visiting Grandfather's friend, Amy, at the Ogopogo Retreat in Canada. Amy rents cabins to tourists who hope to see the mysterious underwater creature, the Ogopogo, swimming in the lake. Henry, Jesse, Violet, and Benny can't wait to try to spot the Ogopogo from their cabin. Amy tells the children about a riddle that an old friend left for her in one of the cabins that could lead to a small treasure. The children need to find the treasure,...

The Aldens visit Goldwin University, where Grandfather attended college. The old library is about to be torn down. But legend says the stone gargoyles guarding the roof of the old building will do anything to protect it-even fly. When the creatures begin appearing outside the windows, people are terrified. But the Boxcar Children think there is another reason the gargoyles are turning up in places they shouldn't. And they're determined to figure it...

The Aldens are visiting the New Jersey shore and enjoying the beach and the boardwalk attractions. A family friend has just bought an amusement pier, and the children are excited to help out. But, there are rumors that the rides aren't safe, and someone has stolen a zombie, from the haunted house! Can the Boxcar Children find out what's behind all the trouble?

The Aldens are visiting a friend who owns a drive-in movie. The children love to eat popcorn in the car and watch movies under the stars. But one night the sound system starts playing loud music, and a couple of employees seem to be hiding a secret.

It's spring and all the baby animals are being born, a perfect time to visit the zoo. The Aldens join a group of kids as they all take pictures throughout the zoo, each hoping to win $500 in a photo contest. When one of the cameras is missing, the Aldens take on the mystery and save the day.

When a new store called the Game Spot opens in their town, the Aldens are thrilled. But, it's not fun and games when the other stores at Crossroads mall are robbed. What's more, letters are disappearing from the sign in front of the shopping center!

It's a delicious new mystery with the Boxcar Children as they help catch a cupcake thief! Mama Tova's shop in Greenfield is so famous that every day, people line up around the block to buy her cupcakes. But when someone breaks into her kitchen, it's clear that her secret recipe is in danger. The Aldens follow the suspects to a bake-off where they must find the culprit using their mystery-solving skills-and their taste buds, too!

A hip new doughnut shop known for its bizarre recipes is opening up in Greenfield. At first, the owners of the other doughnut shop in town, Delilah's, aren't worried. But, when the new shop starts making doughnuts that look just like some of Delilah's greatest hits, the Boxcar Children must figure out if it's just a coincidence or if someone, from the new shop is stealing Delilah's recipes.

When a new dog obedience business opens in Greenfield, the Aldens decide to enroll Watch for a refresher course. At the first class a Dalmatian goes missing, and everyone wonders if the dog ran away or was stolen. But when a malamute disappears at the second class, Henry, Jessie, Violet, and Benny know they have a mystery on their hands. Could the thief be the class's instructor, the Dalmatian's owner, the dog groomer, or the owner with the very obedient...

A big Hollywood agent wants Watch to appear in a commercial for a new kind of dog food! Even though Watch seems to love the food on-camera, he won't touch it at home. Someone at the studio has been switching the brand and the Aldens must find out the truth behind the cover-up. Should Watch still do the commercial even though he doesn't like the product?