Gertrude Chandler Warner
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The Aldens are helping to map out a new trail on Blizzard Mountain. As they travel through the frozen wilderness, they learn that theres treasure buried somewhere on the mountain! The children begin to search for it, but someone or something is after them. Is Blizzard Mountain haunted, or is someone after the treasure?
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When the Aldens visit their friend Fran in Wisconsin, they can't wait to hear her tell the story of the runaway ghost. Fran's family ghost hasn't been spotted in years, but the Aldens still shiver at the spooky tale of the ghost's bell clanging after dark. Then Violet hears a mysterious ringing in the middle of the night and the children start to wonder--could the runaway ghost be back?
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The Aldens are visiting a real dinosaur dig in Montana, in an area full of fossils and caves! But the bones of a rare dinosaur have gone missing, and when the children begin to search for clues they hear strange noises in the caves and discover mysterious tracks! Why are bones disappearing? And could there be a real-life dinosaur on the loose?
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The Aldens travel to Australia to learn about protecting the Great Barrier Reef and the animals that live there.
Henry, Jessie, Violet, and Benny are going down under. Off the coast of Australia, they dive in to explore the Great Barrier Reef. With the help of their conservationist guide, Kayla, they learn about ways to help rebuild the damaged reef. But coral reefs take a long time to take shape. Can the Aldens find ways to help the animals that...
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When Mrs. McGregor, the Aldens housekeeper, learns that she cannot afford to keep her childhood home, the Crooked House, the Aldens want to help. For years, there has been an unsolved riddle about the house, and solving it could lead to a treasure! Will the treasure save the Crooked House? Can the Boxcar Children find it in time?
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The Aldens have joined a bicycle race! Three days of riding and camping should be fun for everyone. Even Grandfather has joined the race. But right from the word Go! things go wrong: misleading road signs by day and collapsing tents by night. Henrys 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.
56) The Robot Ransom
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Henry and Jessie have signed up to be in a robotics competition with a team from school. But someone from another team isn't playing by the rules. Can the Aldens use their sleuthing skills and what they've learned about technology to find the culprit and save the day?
57) The Mystery Girl
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Henry, Jessie, Violet, and Benny are working in a general store, to help out a friend of Aunt Janes. It seems to the children that the young girl who works in the store is behaving very strangely. She seems nervous and wont answer any questions about her past. Then a strange man comes to the store asking about her. What secret is the mystery girl hiding?
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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, he will inherit the millionaire's money! But Sam isn't the only one in town to receive a letter - and whoever solves the mystery first will win the prize!
60) Bicycle Mystery
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The Aldens are making the journey to their Aunt Janes house on an overnight bicycle trip. But on their first night, the children are caught in a rainstorm and have to take shelter in an old abandoned house, when a most unusual mystery a lost dog finds them!