A gripping psychological thriller set in a sleepy seaside town on The Solway Firth. It's 1981 and a young woman settles into her cosy new home believing that she had found peace and tranquillity after a painful marriage break-up. But there are mysteries. Who is the woman upstairs? And who is the irresistibly attractive man who visits her? When Susan finally meets him, she is unaware of the nightmare of pain and deceit he will draw her into, driving her to the very edge of her sanity.