On a hilltop north of Seattle, overlooking the glorious vista of Puget Sound and the white-capped Olympics, stands Rosary Heights, the motherhouse of the Sisters of Saint Dominic of the Holy Cross. The story begins here, with a catastrophic storm that shifts the ground beneath the motherhouse and threatens to send it crashing into the waters below. In a single act of nature, a moment of truth, the order is forced to rethink its place in the world and its purpose.          With Rosary Heights as the backdrop, Catherine Whitney takes a personal journey inside the order that ran the school she attended as a child, the order that, for a short time, she contemplated entering herself. Her quest is to come to terms with what it means to be called to the religious life. What is the secret these women hold that makes them--no matter how diverse--perform common rituals, celebrate the same Mass, and serve the same God?          In The Calling, we meet several valiant women who struggle with the practicalities of the world around them as well as the complicating issues of the life of a nun. Each woman's story is compelling. Together, they form a dramatic human chronicle that is fascinating and revealing--a chronicle of a community that has existed for centuries but is still evolving and whose anxieties and joys are utterly relevant to all of us, regardless of our beliefs.