When Francisco, a young Mexican-American boy, tries to help his grandfather find work, he discovers that even though the old man cannot speak English, he has something even more valuable to teach Francisco.
Seventeen-year-old Gwen, who has been living with her grandfather in Manhattan while she attends music school, joins up with another music student to solve the mystery when her grandfather suddenly goes missing.
With the help of her grandfather, a little girl makes a house for a larva and watches it develop before setting it free, and every summer after that butterflies come to visit her.
Thirteen-year-old Sophie and her cousin Cody record their transatlantic crossing aboard the Wanderer, a forty-five foot sailboat, which, along with uncles and another cousin, is en route to visit their grandfather in England.
When the Alden children set out to solve a jewelry store robbery, they find they must also deal with a mysterious thief who steals their favorite cereal.