"It is early morning when eleven-year-old Julie Sweet and her six-year-old sister, Martha, find the baby on the steps of the new children's library in Belle Beach, Long Island. At the same time, twelve-year-old Bruno Ben-Eli is on his way to catch the 9:15 train into New York City. He is on an important errand for his brother, who is serving in World War II. But when Bruno sees Julie, who hasn't spoken to him for sixteen days, carrying a baby in a basket, he has to follow her. Holt everything, he thinks. Julie Sweet is a kidnapper"--Jacket flap.