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.