Boston, 1662. Mary Deerfield is twenty-four-years-old and the second wife of Thomas Deerfield, a man as cruel as he is powerful. When Thomas, prone to drunken rage, drives a three-tined fork into the back of Mary's hand, she resolves that she must divorce him to save her life. But in a world where every neighbour is watching for signs of the devil, a woman like Mary soon finds herself the object of suspicion and rumour. Mary must fight to not only escape her marriage, but also the gallows.