Each interactive storybook in the In Search Of series is really 2 books in 1! In each story, the characters spilt up to solve a mystery, until the story requires them to work together to continue. Children can begin with either character, completing the wipe-off activities on each level to guide the characters through the pages on their adventures. At various times in the story, the children will need to bring the other character to a point where they can help the other character. Packaged with 2 dry-erase markers, these books reinforce important basic learning skills, and are sure to proivde hours upon hours of learning fun for young children.