The second airmail envelope arrives at Nikki's home address. The same message. Only this time, it's followed by four names: . The contents of the third letter, delivered by motorcycle courier, are even more disturbing. The letter leads directly to the discovery of a body buried in a shallow grave out on the Fens. And Nikki and her partner Detective Joseph Easter are plunged into a baffling murder investigation. Someone appears to be pursuing a personal vendetta against Nikki - and she has no idea who, or why. But one thing she does know: whoever it is is playing a very twisted game - and if Nikki and her team don't stop them, more deaths will follow.