Sorrel, Nettie and Patience are as colorful as the beach plums on the dunes and as mysterious as the fog that rolls into town at dusk. Patience is the town healer and when a new doctor settles into Granite Point he brings with him a mystery so compelling that Patience is drawn to love him, even as she struggles to mend him. But when Patience Sparrow's herbs and tinctures are believed to be implicated in a local tragedy, Granite Point is consumed by a long-buried fear, and its three hundred year old history resurfaces as a modern day witch-hunt threatens. The plants and flowers, fruit trees and high hedges begin to wither and die, and the entire town begins to fail; fishermen return to the harbor empty-handed, and blight descends on the old elms that line the lanes.