The tragedy of cystic fibrosis has been touchingly recounted before, but this is the first book to portray the symbiotic relationship between twins who share this life-threatening disease through adulthood. Isabel Stenzel Byrnes and Anabel Stenzel tell of their struggle to pursue normal lives while grappling with the realization that they might die young. Their story reflects the physical and emotional challenges of a particularly aggressive form of CF and tells how the twins bicultural heritage Japanese and German influenced the way they coped. The Power of Two is an honest and gripping portrayal of day-to-day health care, the impact of chronic illness on marriage and family, and the importance of a support network to continuing survival. These two remarkable sisters have much to teach about the power of perseverance and about the ultimate power of hope.