The last time that Maureen O'Donnell saw Ann Harris she was nursing a couple of broken ribs and reeking of alcohol at the women's shelter. Now Ann has turned up dead hundreds of miles away, in London. Eager to escape some family difficulties of her own, Maureen travels to London to determine the circumstances of Ann's brutal death. In the seedy underworld of criminal exiles and dangerous drug lords, Maureen tries to piece together the horror of Ann's last days - and to save herself from a similarly ugly fate.

Maureen O'Donnell is a psychiatric patient, stuck in an affair with Douglas, a shady therapist. She’s about to end it with him when she wakes up one morning to find him in her living room with his throat slit. Viewed by the police as both a suspect and a witness, even Maureen’s family suspects her. Panic-stricken, she retraces Douglas' last days, finding a trail of rape and deception at a psychiatric hospital where she’d been an inmate. The patients won't talk and staff are afraid. Then a second brutalised corpse is discovered and Maureen realises that her life is in danger.

It’s the case that could make DS Alex Morrow’s career. A suburban home invaded in the dead of night and a vulnerable old man taken hostage. It’s a black and white case and it shouldn’t be hard to solve… The two strangers who forced their way into the house demanded millions the family didn’t have and shouted for a man nobody had heard of. It had to be a mistake, and a bad one at that. But Alex Morrow can’t be depended on and the bosses know it.

It’s just a normal morning for Anna McDonald. Gym kits, packed lunches, getting everyone up and ready. Until she opens the front door to her best friend, Estelle. Anna turns to see her own husband at the top of the stairs, suitcase in hand. They’re leaving together and they’re taking Anna’s two daughters with them. Left alone in the big, dark house, Anna can’t think, she can’t take it in. With her safe, predictable world shattered, she distracts herself with a story: a true-crime podcast.

When notorious millionaire banker Lars Anderson hangs himself from the old oak tree in front of his Kent mansion his death attracts no sympathy. But the legacy of a lifetime of self-serving is widespread, the carnage most acute amongst those he ought to be protecting: his family. Meanwhile, in a wealthy suburb of Glasgow, a young woman is found savagely murdered in her home. The genteel community is stunned by what appears a vicious, random attack.

A Glasgow post office. Martin Pavel cowers on the floor, his eyes locked on those of a terrified child. Above them a masked gunman wields an AK-47 while the boy’s grandfather calmly volunteers to help gather the money. Then the old man stands passively, hands by his sides, while the gunman raises the barrel and shoots him to shreds. Recently returned to work after the birth of her twins, DS Alex Morrow is called in to head the investigation.

William Watt wants answers about his family's murder. Peter Manuel has them. But Peter Manuel is a liar. William Watt is an ordinary businessman, a fool, a social climber. Peter Manuel is a famous liar, a rapist, a criminal. He claims he can get hold of the gun used to murder Watt's family. One December night in 1957, Watt meets Manuel in a Glasgow bar to find out what he knows.

When a badly burned body is found near the remote Ardnamurchan Lighthouse on the west coast of Scotland, it feels like just another day on the job for DCI Jack Logan and his team. But the victim’s list of enemies, including a diminutive loan shark and a powerful local politician, is far longer than Jack was prepared for. And don’t even get him started on the magic psychic sex cult.

Salt water lifts blood. Only salt water. Loch Lomond is a mile deep, but the woman's body surfaced anyway. Found bludgeoned and dumped in the water, she now haunts Iain Fraser, the man who put her there. She trusted him, and now that misplaced trust is gnawing through Iain's chest. He thinks it will kill him. Nearby Helensburgh is an idyllic Victorian town. One-time home to a quarter of all the millionaires in Britain, it is quaint, sleepy and chocolate-box pretty.

Paddy Meehan has just started work on the Scottish Daily News when a toddler is abducted. Two eleven-year-old boys are arrested for his murder and Paddy is shocked to discover that one of them is her fiance's cousin, Callum. When the boy's name is reported in the media, Paddy's family believe that she is to blame. Shunned by those closest to her, she finds herself dangerously alone.

31st August 1997. Rose Wilson is 14, but looks 16. Pimped out by her ‘boyfriend’, she has seen more of the darkness in life than someone twice her age. On the night of Princess Diana's death, Rose snaps and commits two terrible crimes. But a defence lawyer takes pity and sets out to do what he can to save her. Present day. DI Alex Morrow is a witness in the case of Michael Brown – a vicious, nasty arms dealer.

Paddy Meehan is trawling the city for a story that will get her off the terrible night shift to which she's been consigned by her male colleagues. And then a woman, bleeding from a vicious head wound, offers her £50 to leave her alone. The very next morning the woman is found dead. Only Paddy cares enough about what's really happened to pursue a dark and brutal truth that could make her career, or kill her.

When a light aircraft crash-lands at Machrie airport, Daley and Scott rush to the scene. But it soon becomes clear that both occupants of the plane were dead before take-off.... Meanwhile, tending to his lobster creels, Hamish finds himself in the wrong place at the wrong time, and back at the County Hotel, Annie is beginning to suspect her new boss Ian Macmillan may not be as he first appeared. 

When Isabel Gallagher is found murdered on the floor of her baby’s nursery by her mother, it’s a grueling case for Detective Lottie Parker. Isabel’s pajamas have been ripped, her throat cut and an old-fashioned razor blade placed in her hand. As Lottie looks at the round blue eyes and perfect chubby cheeks of Isabel’s baby daughter, she can’t understand who would want to hurt this innocent family.

Former soldier. Ex-copper. Current man on the edge. Shunned by his old colleagues, and dividing his time between a dead-end job and the bottom of a whisky bottle, former Police Scotland detective superintendent Bob Hoon’s life is a mess. Then an old face from Hoon’s Special Forces days turns up asking for help: His teenage daughter has been missing for months, the police have drawn a blank, and he needs the kind of help that only Hoon can provide. And besides, Hoon owes him one.