William Wenton and the Secret Portal

William Wenton is a code-breaking genius, but now he faces a new threat—one that’s lurking inside him—in the second book in the William Wenton series that School Library Journal calls “part Alex Rider, part Da Vinci Code for kids, and part Artemis Fowl.”

After William starts to suffer from mysterious fits that leave him unable to control his body—let alone crack codes—he worries that the metal inside him is acting up. There’s only one place he can go for answers: the Institute for Post-Human...