Covid has derailed Joe Camm’s life in London. He has lost his career and his home. When he first catches sight of the stone cottage on the remote Scottish island he believes he might somehow salvage both the house and his life. As he ploughs all his energy into the building work, the history of the island and its remarkable landscape gradually intensifies Joe’s relationship with the place and the locals, especially the recently widowed Louise Fitzgerald. However, the house holds a shocking secret, and a series of disturbing incidents seem destined to halt his plans. Before Joe and Louise can start again, they must solve the long-hidden mystery and confront terrible personal danger. Who is trying to stop the shadow house being rebuilt? Why are they so determined? How far will they go?