The Overnight Guest by Heather Gudenkauf

True crime writer Wylie Lark doesn’t mind being snowed in at the isolated farmhouse where she’s retreated to write her new book. A cozy fire, complete silence. It would be perfect, if not for the fact that decades earlier, at this very house, two people were murdered in cold blood and a girl disappeared without a trace. As the storm worsens, Wylie finds herself trapped inside the house, haunted by the secrets contained within its walls—haunted by secrets of her own. Then she discovers a small child in the snow just outside. After bringing the child inside for warmth and safety, she begins to search for answers. But soon it becomes clear… Read more.