Twins Callie and Charlie have a lot in common, but they are also very different: Charlie has autism. Callie narrates the story, describing what autism is and exploring the issues that come along with it. The theme is of love, patience, and acceptance. Endnotes give a few basic facts for children unfamiliar with autism. The authors, a mother-daughter team, based this story on personal experience. The bright, mixed-media illustrations depict the family’s warmth and concern.