Book excerpt: Julie really likes the new girl in her class, Carla Warner. Still, there's something odd about her. The things Carla says don't quite add up, and she avoids answering questions about her family. At first Julie is sure there's a sensible explanation, but soon she starts to wonder what's really going on. A disturbing discovery leads her to realize that her new friend may be in real danger! An illustrated "Looking Back" essay provides facts about America in the 1970s.