Boxcar children
A mystery surrounds the old yellow house on Surprise Island! Years ago, a man vanished from the house, and no one knows how or why. Now a long-lost clue leads the Aldens to investigate the...
A rockslide strands the Aldens on a mountain! But being stuck on Old Flat Top isn't all bad. As the children wait for rescue, they discover that a secret cave has opened up—one that just might hold legendary...
11. Caboose mystery
The Aldens take a train journey! And at every stop, someone has something to say about the train car the children are riding in. It turns out Caboose Number 777 has an unusual past—one that comes...
The Aldens spend their summer traveling in a houseboat! But when a black car shows up at every place they dock, the children begin to think someone is after something on the boat. Can the Boxcar...
15. Bicycle mystery
22. The animal shelter mystery
24. The mystery of the hidden painting
27. The camp-out mystery
28. The mystery girl
29. The mystery cruise
30. The disappearing friend mystery
31. Mystery of the singing ghost
32. The mystery in the snow
34. The mystery horse
35. The mystery at the dog show
36. The castle mystery
37. The mystery of the lost village
39. The ghost ship mystery
42. The mystery of the missing cat
43. The mystery on stage
44. The dinosaur mystery
45. The mystery of the stolen music
47. The mystery of the hot air balloon
49. The mystery of the stolen boxcar
50. Mystery in the cave
51. The mystery on the train
53. The guide dog mystery
55. The mystery of the secret message
58. The mystery at the Alamo
59. The outer space mystery
61. The growling bear mystery
65. The cereal box mystery
67. The mystery of the stolen sword
68. The basketball mystery
69. The movie star mystery
70. The mystery of the pirate's map
Grandfather has just bought a plot of land in the Rocky Mountains—complete with a ghost town! When the Aldens hear their land is haunted they don't believe it. But when they see a ghostly figure in the main street, they know something's up. There's a mystery and the Aldens are determined to solve it!
72. The mystery in the mall
74. The poison frog mystery
75. The mystery of the empty safe
76. The great bicycle race mystery
77. The mystery of the wild ponies
78. The mystery in the computer game
79. The mystery at the Crooked House
80. The hockey mystery
81. The mystery of the midnight dog
82. The summer camp mystery
84. The haunted clock tower mystery
85. The disappearing staircase mystery
Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and they're setting off on a wild winter adventure! Â The Aldens are helping to map out a new trail on Blizzard Mountain. As the young explorers traipse through a frozen wilderness, they learn that this winter wonderland holds a hidden secret. There's buried treasure somewhere on the mountain! The children begin to search for it—but
...Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and they're about to meet a mysterious mummy! Â The Greenfield Museum is holding a special exhibit all about ancient Egypt, and the main attraction is a 4,000-year-old mummy. The Aldens are helping the museum curator set up the exhibit and learning all about life in ancient Egypt. But ever since the mummy arrived, nothing's gone right
...89. The mystery of the star ruby
90. The stuffed bear mystery
93. The comic book mystery
94. The ice cream mystery
95. The midnight mystery
96. The mystery in the fortune cookie
98. The mystery of the runaway ghost
The Alden's neighbor, Lina, thinks there's treasure hidden in her attic and she wants the Boxcar Children to help her find it. Of course, the children are eager to help search—but it appears they aren't the only ones looking for the treasure. Can the Boxcar Children discover the treasure in the attic before someone else finds it first?
The Alden children have discovered another mystery close to home! The old boxcar where they once lived is now a playhouse in their backyard. Â One night, Benny sees a strange light in the boxcar, and the children begin to find clues to the boxcar's past. Could something that happened long ago be haunting the boxcar now?
101. The clue in the corn maze
102. The ghost of the chattering bones
103. The sword of the silver knight
107. The giant yo-yo mystery
111. The Seattle puzzle
A dusty old theater that was shut up for years is coming to life again, and the Aldens are there for opening night! The Boxcar Children are excited to help out backstage with a brand-new mystery play. But the Trap-Door Theater has mysteries of its own—with rumors of ghosts, disappearing props, and even a haunted seat! What secrets lie behind the scenes?
114. A horse named Dragon
The local radio station is putting on the Great Detective Race, where contestants must solve riddles and search all over Greenfield for clues leading to the grand prize! One of the prizes would make a perfect gift for Mrs. MacGregor, so the Aldens sign up for the contest. Soon they're following the riddles' clues all over town. But when some of the clues turn out to be fake, it's clear that someone is playing unfairly. Could another contestant
...118. The spy game
119. The dog-gone mystery
120. The Vampire Mystery
121. Superstar Watch
125. The Cupcake Caper
 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!