Detective Nikki's friend thinks she has a deadly stalker. Helen Brook is involved in a serious accident where she is trapped in a collapsed cellar. After her hard-won recovery, Helen is still getting flashbacks to a man she says was down there with her and who confessed to a murder. . Then Helen tells Nikki that someone is watching her. But is all this in her friend's imagination and part of her post-traumatic stress? And why is Stephen Cox back in town? He's the villain who tore Nikki's life apart and he seems to have returned for revenge. Before long the whole town is on the verge of hysteria and her friend's fear will lead Nikki and Joseph on a very dangerous trail. The Lincolnshire Fens: great open skies brood over marshes, farmland, and nature reserves. It is not easy terrain for the Fenland Constabulary to police: with remote Fen villages, dangerous and often misty lanes, and poor telephone coverage. There are still villages where the oldest residents have never set foot outside their own farmland. A visit to the nearest town is a major event. But it has a strange airy beauty to it, and above it all are the biggest skies you've ever seen.