The Sparrow Sisters are as tightly woven into the seaside New England town of Granite Point as the wild sweet peas that climb the stone walls along the harbor. Patience Sparrow 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 her herbs and tinctures are believed to be implicated in a local tragedy, Granite Point is consumed by a long-buried fear --- and its 300-year-old history resurfaces as a modern day witch-hunt threatens.