"In a Carmelite monastery outside present-day Los Angeles, life goes on in a manner virtually unchanged for centuries. Sister John of the Cross has spent years there in the service of God. And there, she alone experiences visions of such dazzling power and insight that she is looked upon as a spiritual master. ". "But Sister John's visions are accompanied by powerful headaches, and when a doctor reveals that they may be dangerous, she faces a devastating choice. For if her spiritual gifts are symptoms of illness rather than grace, will a "cure" mean the end of her visions and a soul once again dry and searching? "--BOOK JACKET.