Ava Whalen loves Matthew with all her heart, but, having settled in his house on the island after the wedding, she realizes that she does not know her own husband very well. She finds strange drawings in one of the rooms and concludes that their author was a woman. But who is she to Matthew? Ava soon joins the local Historical Society, where she is drawn into an investigation that goes back more than a century. What amazement befalls Ava when it becomes clear to her that she, Matthew, the mysterious author of the drawings and the twin sisters who lived on the island more than a century ago are links in one chain, only by breaking which can she find peace.