Gertrude Chandler Warner
When the Boxcar Children help out in a local garden, they dig up one strange thing after another! First, the tomato plants seem to move every day. How can that be? Then the Aldens follow the clues to an unsolved bank robbery, and it's clear that a very big mystery is growing in Greenfield.
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!
The Boxcar Children are going to a dog show. They meet all kinds of dogs, from a spotted Dalmatian to a big, hairy sheepdog. But then strange things start happening at the dog show, and no one knows why. Can the children solve the mystery and save the day?
An orchestra is coming to town! The children are excited to hear the orchestra play, to meet the musicians, and to learn how to make their own instruments. The orchestra is also displaying a very valuable, old piece of music. But when it mysteriously disappears, it's up to the Boxcar Children to find it!
The Aldens find a mysterious painting hidden in the attic. The children learn that it is a portrait of their grandmother, whom they never knew, wearing the necklace Grandfather gave her when they were married. The necklace disappeared on their first anniversary — and was never found. Can the Boxcar Children track down a necklace missing for so many years?