DI Nikki Galena gets a series of anonymous calls. She is told the place, time, and who will die. But the messages are in a secret language used only by villains. Nikki and her team must decode the riddles and work out where the threats are coming from. Meanwhile, The Fens have been hit by a series of "designer burglaries." It appears that a new gang of thieves are stealing to order. And things get very close to home when a friend of Nikki's mother dies suddenly and perhaps suspiciously. Do any of these events relate, and can Nikki stop the thieves on The Fens, before anyone else dies?