Book excerpt: Dena loves using magnets to perform magic tricks for the kids at the pool. When Enrique arrives in town, he doesn’t like that Dena is fooling the others. He gives her a century-old treasure map and Dena uses her compass and tools to plot the location of the treasure. To her surprise, the treasure is not where it should be! What could cause her compass to lead her off course? When she discovers the answer, will Dena keep fooling the other kids with magic tricks or will she help them learn about magnetism and the earth’s shifting magnetic poles?