Set in the twelfth century, The Anchoress tells the story of Sarah, only seventeen when she chooses to become an anchoress, a holy woman shut away in a small cell, measuring seven paces by nine, at the side of the village church. Fleeing the grief of losing a much-loved sister in childbirth and the pressure to marry, she decides to renounce the world, with all its dangers, desires and temptations, and to commit herself to a life of prayer and service to God. But as she slowly begins to understand, even the thick, unforgiving walls of her cell cannot keep the outside world away, and it is soon clear that Sarah's body and soul are still in great danger.