On a frozen winter’s night, a heartbroken detective stands above the ruins of a freshly dug grave. The body of a teenager has been taken, the fifth in a month, and all without motive and without consequence. Desperate to find answers, DS Anna Beldon, whose own husband has disappeared without trace, is drawn into a conspiracy older than recorded human history. Into a society hidden from ours and determined at any cost to protect a mistake which should never have been made. An abomination long ago abandoned by its makers, and left as a secret place intended never to be found. The secret a man has crossed time to unlock. And whose terrible power, he is determined to unleash...