Enter the imaginative world of the four-year-old Sapphire twins. Jackson and Jillian love pretending and love doing everything all by themselves. Tonight's task is tooth-brushing. But when Annie the guinea pig enters the scene, there is a brush with disaster. Older sister and brother, Alicia and Mason, will help the twins achieve a milestone of independence. "Jackson and Jillian" is written for read-aloud and for...