A body entombed in concrete, a missing cop, a bizarre death. Three investigations, one chilling mystery.

When a man’s body is found amidst the wreckage of a crashed car abandoned on a back road, Detective Inspector Solomon Gray initially believes the death to be the result of a tragic accident, the aftermath of a collision with a driver who then fled the scene. But Gray soon unravels a chilling truth: the man died before the collision.

Meanwhile, one of Gray’s colleagues, the usually dependable Desk Sergeant Dai Morgan, has disappeared. Morgan had apparently been on the brink of unraveling a decades-old cold case – the identity of a recently discovered corpse that had been buried under the concrete foundations of a farm building over twenty years ago, a case Gray had a personal connection to.

As Gray delves deeper he finds these mysteries are in fact intertwined and, amidst the darkness, one truth remains clear: someone is determined to keep the past buried at any cost