When a teenager is the victim of an unprovoked attack while walking his dog, a murder investigation begins. A cruel twist of fate makes his innocent family the targets of a vicious campaign of terror. As the detectives of Liverpool's Major Investigation Team try to contain the violence, several key members of an organized crime family begin to topple, causing shockwaves across the planet.

D.I. Duncan McAdam is dispatched home to the Misty Isle. A body has been found buried in a remote location on the Waternish peninsula. Well-preserved in the peat, Isla Matheson—missing for the better part of two decades—is revealed to a shocked island community. A teenage runaway is dead...and no one is talking.

DI Alan Williams is called to the recovery of two bodies from the sea at Trearddur Bay, during a storm. The lifeboat crew suspect they're fishermen, washed away by a wave, but they’re wrong. Alan and his detective sergeant, Kim Davies, realise the men were beaten and tied together before they entered the water. Two miles along the headland at Porth Dafarch, a third victim is found but there are no obvious links. As the number of victims increases, a major investigation team battles to unravel a deadly puzzle.

Alan Williams is concerned when one of his detectives is late for work. Kim Davies is never late for anything. When he investigates her whereabouts, what he finds is beyond disturbing and it's about to get much worse...

Her blue eyes wide open, glossed over. A few specks of sand clung to her long, dark lashes. Her beautiful face, immobile, covered in sparkling flecks of sand. Who is the beautiful girl found at dawn, on a deserted stretch of white sand beach? What is her secret? FBI special agent Tess Winnett searches for answers relentlessly. With each step, each new finding, she uncovers unsettling facts leading to a single possible conclusion: Dawn Girl is not the only victim. Her killer has killed before.