When the body of a red-haired young man is washed up on the shore of the beautiful Isle of Mull, Detective Superintendent Lorimer's tranquil holiday away from the gritty streets of Glasgow is rudely interrupted. The body has been bound with twine in a ghoulishly unnatural position and strongly reminds Lorimer of another murder: a twenty-year-old Glasgow case that he failed to solve as a newly fledged detective constable and which has haunted him ever since.

New Year's Eve should be a time for celebrating. A chance to spend time with loved ones and look forward to the year ahead. For DSI William Lorimer, however, this New Year's Eve will be one that he will never forget. Called to a house after gunshots are reported, the carnage he finds there will have a powerful impact on his life - leaving him questioning his future with Police Scotland.

When Dorothy Guildford is found stabbed to death in her home, all signs point to her husband, Peter. The forensic psychologist is convinced there's more to the case than meets the eye, but Police Scotland are certain they have their man. While DC Kirsty Wilson searches for evidence that will put Peter away for good, she is shocked to discover a link with a vast human-trafficking operation that Detective Superintendent William Lorimer has been investigating for months.

2014: The Commonwealth Games are coming to Glasgow and security is extra tight, particularly after a mysterious bomb explodes in nearby rural Stirlingshire. As the opening ceremony for the Games draws ever closer, the police desperately seek the culprits. But Detective Superintendent Lorimer has other concerns on his mind. One is a beautiful red-haired woman from his past whose husband dies suddenly on his watch.

When Kirsty Wilson lands a room in a luxury Glasgow flat owned by Swedish fellow student Eva Magnusson she can't believe her luck. But Kirsty's delight turns to terror when she finds the beautiful Swedish girl lying dead in their home and their male flatmate accused of her murder. Kirsty refuses to accept that he is guilty and, inspired by family friend Detective Superintendent Lorimer, sets out to clear his name. Meanwhile, Lorimer calls on trusted psychologist Solly Brightman to help unravel the truth behind the enigmatic Eva's life and death.

Detective Superintendent Lorimer's worst nightmare is a serial killer loose in his city. But two serial killers operating at once on the streets of Glasgow is a nightmare come to life. Is there a link between the brutal slaying of prostitutes in the backstreets of the city and the methodical killing of several unconnected businessmen? Lorimer is never one to jump to conclusions but something about these cases just doesn't add up. Each killer has a different MO, but their obsession with murder is equally chilling.

There's a hit man in Glasgow: unpaid and angry, he's decided to settle his own debts.... Elsewhere in the city, Marianne Brogan can't sleep. She's plagued by a nightmare: someone in the shadows, whispering threats, stalking her every move. To make matters worse, Marianne can't get hold of her brother, Billy. Despite knowing some shady characters from Glasgow's underworld, Billy's always been there for her - until now.

An unpredictable killer is loose on the streets of Glasgow, experimenting with death. Beginning with brute force, the murderer moves on to poison and drowning, greedy for new and better ways to kill. Faced with a string of unconnected victims, DCI Lorimer turns to psychologist and friend Solomon Brightman for his insights. Lorimer is also assigned to review the case of a fatal house fire. His suspicions are raised by shocking omissions in the original investigation.

Eric Chalmers is one of the most popular teachers at Muirpark Secondary School in Glasgow. Gentle and kind, he is the person the students come to when they want to confide in someone. So when precocious teenager Julie Donaldson accuses Chalmers of rape, the school goes into shock. How could a deeply religious family man like Chalmers do anything like that? With some students and teachers supporting Julie and others standing by Chalmers, life at Muirpark is far from harmonious. And then things get much worse.

When Chief Inspector Lorimer returns from his holiday on the island of Mull, he feels a welcome sense of calm. But it doesn't last long. Kelvin FC's new star midfielder is found brutally stabbed to death in his own home, and, with his wife apprehended trying to leave the country, a seemingly straightforward new case begins. But the grisly murder of a referee after a Kelvin match throws light on some dark secrets at the ground.

The Glasgow Orchestra are rehearsing to perform, but little do they know of the sequence of events happening backstage. When George Millar, the orchestra's leader, is brutally murdered in his dressing room, his colleagues are shocked. But the show must go on. Enter DCI Lorimer and psychologist Solomon Brightman to investigate. What they uncover is a series of irrevocably tangled relationships between the orchestra members.

The body of a prostitute is found at Glasgow's Queen Street Station, her hands, pointing towards her feet, placed as if in prayer, a small flower pressed between the palms. Psychologist Solomon Brightman is called to assist DCI Lorimer in the murder hunt, with the hope that his lateral thinking will shine a light on the case from a different angle. But before any conclusions can be drawn, the body of a nurse is discovered at The Grange, a private clinic.

When three young women are discovered strangled and mutilated in a Glasgow park, it is up to DCI Lorimer to find their killer. Frustrated by a lack of progress in the investigation, Lorimer is forced to enlist the services of Dr Solomon Brightman, psychologist and criminal profiler. Together they form an uneasy alliance. But when a homeless man is brought in for questioning, the investigation takes a bizarre turn.

When his old friend and former colleague is shot dead at his home, Detective Superintendent William Lorimer is devastated. And his problems are only just beginning. It's not long before two further deaths are reported: both victims ex-policemen. It's clear this is a targeted campaign against their own, yet with no other link between the victims to identify the killer, Lorimer's police team are starting to panic. Who will be next? 

When a badly mutilated body washes up on the shores of Loch Ness, DCI Jack Logan's dream of a quiet life in the Highlands is shattered. While the media speculates wildly about monster attacks, Jack and the Major Investigations Team must act fast to catch the killer before they can strike again. But with Nessie-hunters descending on the area in their dozens, and an old enemy rearing his ugly head, the case could well turn out to be the most challenging of Jack's career. And, if he isn't careful, the last.