Maddie Beck, 13, lives with her mother in a Long Island boardinghouse while her lieutenant-commander father is stationed in the Pacific. Her mother rapidly fits in to their new community, but Maddie finds it difficult to make friends, until classmate (and crush) Johnny Vecchio learns that her father is in the Navy. After the Japanese bomb Pearl Harbor, Maddie and Johnny organize a student group to sell war bonds, gather scrap metal, collect newspapers and used books, and make first-aid kits for the Red Cross. One restless night, Maddie takes a walk on the beach and encounters someone with a heavy accent and another threatening character. This night leads to more mysterious events that finally prompt her to call the FBI, which leads to the arrest of four Nazi agents. Then the Becks get a telegram that Maddie's father has been injured, and they prepare to move to San Francisco where he is to be hospitalized. Osborne has done an excellent job of capturing the feelings and anxieties of the time coupled with the concerns and uncertainties of young people.