A woman who seems to possess the secret to happiness finds herself at the center of a world-wide media storm. After fleeing from the genocide in her native Algeria, Thassadit Amzwar is enrolled in college in Chicago. Everyone who meets her is captivated by her luminous spirit and generous nature. Could her unwavering happiness be genetically determined? If so, it seems that everyone on earth wants a share of that genetic good fortune. Shot through with scientific jargon and keen cultural observations, this is a fascinating, fast-paced story from the National Book Award-winning author of The Echo Maker (2006).