People line up around the block to buy Mama Tova’s cupcakes. But who could be trying to steal her secret recipe? The Aldens follow the clues to a cupcake contest, where they must find a thief using their mystery-solving skills—and their taste buds, too!

The Aldens are asked to be extras in a movie while visiting the Alamo but things are not picture perfect. They have to discover who stole a precious ring from the beautiful star, Claire, and they find out many people are jealous of her.

One day in the park, the Alden’s dog, Watch, comes across a mysterious box with a note inside. “Congratulations!” the note says. “You’ve found it!” The box is part of a game called Geocaching. Soon, Henry, Jessie, Violet, and Benny are searching all over town for hidden boxes and making friends with other kids in the geocaching club. But is one of the club members a thief?

The Aldens have joined a bicycle race! Three days of riding and camping should be fun for everyone. Even Grandfather joined the race. But right from the word “Go!” things go wrong: misleading road signs by day and collapsing tents by night. Henry’s first flat tire could be bad luck, but three flat tires point to foul play. But who is playing foul—and why? The Boxcar Children are determined to solve the mystery before they cross the finish line.

The Boxcar children decide to help restore a historic firehouse when the town council starts thinking about demolishing it. Soon enough they realize that someone is hindering their efforts.

The Boxcar Children are vacationing in London, England, where there is so much to see and do. Yet, as they eat their fish and chips, watch the changing of the guard at Buckingham Palace, and see the famous crown jewels of England, Violet can’t shake the feeling that someone is following them. Have the Aldens flown across the ocean straight into a mystery?

Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and they’ve received an invitation to a mystery! When their friend Sam gets a letter full of riddles from an eccentric millionaire, the Aldens are eager to help him crack the code. If Sam can solve the puzzle in time, he will inherit the millionaire’s money! But Sam isn’t the only one in town to receive such a letter—and whoever solves the mystery first will win the prize. The Aldens are eager to help their friend, but solving the millionaire’s mystery turns out to be even harder than they expected. When every clue eventually leads them back to Sam, the Boxcar Children begin to wonder: Could the answer lie somewhere in Sam’s mysterious past?

Who is trying very hard to put Piccolo's Pizzeria out of business?

When the Aldens first arrive in Elbow Bend, they meet Kate Frances, who tells them all sorts of ghost stories about the town! The scariest tale is about a ghost dog who howls at midnights and appears to warn people of danger! The Aldens think it is just a story until they hear dogs all over Elbow Bend howling at midnight. Does the ghost dog really exist or is someone playing a trick on them? The Boxcar Children are determined to find out.

Jessie and Benny are participating in the Great Greenfield Bake-Off, a local baking competition for kids. But ingredients get mixed up during the competition and then the power goes out. Is someone trying to put an end to the contest?

Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and they are visiting the Crooked House, Mrs. McGregor’s childhood home in the snowy countryside. When Mrs. McGregor, the Aldens Housekeeper, learns that she cannot afford to keep the Crooked House, the Aldens want to help. Mrs. McGreggor tells them that ever since she was a little girl, there was an unsolved riddle about the house. And solving that riddle could lead to a treasure! Could the treasure save the Crooked House? Can the Boxcar Children find it in time?

Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather and they have become friends with a real pro-hockey player. The Boxcar Children cannot believe it when they meet their favorite hockey star, Kevin Reynolds, while out skating one day. Kevin is coaching a girls’ hockey team and planning to build a huge new skating rink right in Greenfield. Kevin offers Jessie a place on the team and Henry is going to be assistant coach! As soon as practices begin, however, strange things start to happen. Suddenly, equipment is missing and Kevin’s plans for the new rink are almost ruined. Is someone trying to prevent Kevin’s new rink from being finished? The Boxcar Children want to help their new friend and solve this mystery!

Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and they're going on an exciting trip to New York City! The children have a great time visiting the Empire State Building and ice skating at Rockefeller Center. But they discover something very strange at the hotel swimming pool: Someone has dyed the water bright purple! Who would do that? And why?

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 out.

Cousin Alice is running for mayor, and the Boxcar Children must find out which of her opponents is using sneaky tricks to win the race!