The quaint spa town of Harrogate, in the north of England, isn’t supposed to be dangerous. But DCI Rosie Marks knows better.
When a teenage drug runner is found stabbed in a quiet North Yorkshire street, DCI Rosie Marks is drawn into a brutal turf war that's anything but rural. At the helm of the violence is Manchester crime boss Brian Hazell — a ruthless operator with a reputation for staying one step ahead of the law.
As Rosie and her elite unit, Operation Caterpillar, push back against the growing threat of county lines drug gangs, the battle turns personal. Hazell isn’t just expanding his empire — he’s sending a message. And Rosie is listening.
With her team stretched thin, her daughter needing extra care, and a suspected leak inside her own station, Rosie must risk everything to stop Hazell — before more innocent lives are destroyed.
Fast-paced, gritty, and utterly gripping, County Lines introduces DCI Rosie Marks — a fierce northern detective fighting crime where you least expect it.
The stakes are higher. The threats are closer. And DCI Rosie Marks is running out of time.
Respected, relentless, DCI Rosie Marks, known to friends and family as “Yorkshire Rosie”, DCI Rosie Marks leads Operation Caterpillar — a dedicated unit tackling the spread of county lines and violent organised crime in Harrogate, UK.
But when a violent mistake puts Manchester crime boss Brian Hazell back in her sights, Rosie sees a chance to take him down for good.
Hazell is brutal. Untouchable. And this time, he’s fighting back harder than ever — with inside knowledge that could only come from someone within Harrogate Police.
As Rosie juggles a mounting caseload, personal pressures, and the grim realisation that someone close is betraying her, she must go above and beyond to protect her team, her daughter, and her town.
Because Hazell isn’t just playing a game — and losing could be fatal.
Gripping, gritty and full of heart, Above and Beyond is the second book in the DCI Rosie Marks series. Perfect for fans of real-world British crime thrillers.
A brutal murder. A rising tide of violence. And a detective pushed to her limit.
DCI Rosie Marks — known to many as “Yorkshire Rosie” — is tough, respected, and unafraid to bend the rules in the fight against organised crime. But even she’s shaken when a man is found dead in Harrogate in what looks like a gangland execution.
As Rosie and her Operation Caterpillar team dig deeper, it becomes clear this killing is more than a message — it’s a declaration of war.
County lines drug gangs are growing bolder, more violent, and more determined to claim Harrogate as their own. And while Rosie faces a dangerous case on the streets, her personal life is also unravelling behind closed doors.
With the pressure mounting and her confidence slipping, Rosie must summon every ounce of strength to hold the line — before the chaos consumes everything she holds dear.
Gritty, gripping and emotionally charged, A Hanging Offence is the third novel in the DCI Rosie Marks series — a crime thriller with heart, set in the shadows of North Yorkshire.