As a favor to her rock journalist boyfriend, Thai-boxing, rock-and-roll private detective Kate Brannigan agrees to track down a missing song-writer Moira Pollock, a search that takes her into some of the seediest parts of Leeds and Bradford. But little does she realize that finding Moira is only a prelude to murder. Juggling her other cases, including a search to uncover the source of counterfeit luxury goods, Brannigan finds herself for the first time on the trail of a killer.

Karen Pirie is the newly appointed Deputy Inspector of the Cold Case Unit, and her first investigation takes her 25 years into the past to the national miners’ strike. At the time, a kidnapping gone wrong left a small boy missing, but new evidence suggests he might still be alive. As Pirie delves deeper, she realizes the boy’s disapperance may be linked to another cold case involving a missing miner.

Five years ago, DCI John Lomond led the search for notorious Glasgow child-killer ‘The Sandman', until personal tragedy forced him off the case. In Lomond's absence, the killer was never found. Now, with nothing but work left in his life, Lomond remains obsessed with the case–despite the nightmares it brings. When a child is abducted in similar Sandman fashion from an affluent Glasgow suburb, Lomond is brought in to find them before it's too late.

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.

Was the biggest case of his career the worst mistake he ever made? Ten years ago, DCI Jack Logan stopped the serial child-killer dubbed "Mister Whisper", earning himself a commendation, a drinking problem, and a broken marriage in the process...When another child disappears a hundred miles north in the Highlands, Jack is sent to lead the investigation and bring the boy home. But as similarities between the two cases grow, could it be that Jack caught the wrong man all those years ago?