This debut novel--told in interviews--spans 20 years in the rise and fall of the charismatic leader of a seductive self-help movement. In the 1990s, a talk show host leads the personality movement, an integrative approach to radical self-transformation. Mayah, the movement's architect and celebrity advocate, adopts a curious, wild child named Masha Isle. A guinea-pig for the movement, and the key to its future, Isle is the subject of...