The Mystery of the Hidden Painting

The Mystery of the Hidden Painting is about the adventure of four orphans who discover a hidden painting in an old house. The children work together to solve the riddles associated with the painting and uncover its secret origins. In their grandfather's attic, the Aldens discover a painting of their grandmother wearing a necklace that disappeared long ago. Although the Boxcar Children are determined to track down the missing necklace, they only find dead ends. Can the necklace be found?