A Dark Sin
Our darkest secrets are best left buried...
When a local journalist is found dead in an isolated spot on Roydon Common, lying beneath a hangman's noose on the anniversary of a teenager's suicide, DI Tom Janssen is asked to take on the investigation as a favour to local colleagues and must unpick the deceased man's life to discover how he came to be there.
The dead man was working on something, a story he was keeping close to his chest and even those closest to him, loved ones and colleagues, were kept in the dark. He had his own secrets, a side to his character that he rarely showed to others unless they were unlucky. But what did he know that was so damaging as to be worth killing for?
As the team delve into his life, past and present, the investigation pulls in successful business people, grieving family members, and a local celebrity with fascinating stories to tell. As the investigation develops it becomes clear that more than one person is harbouring a secret... but are they secrets that are worth a man's life? As past sins threaten to be exposed, will someone be forced into killing again?
Set within the mysterious beauty of coastal Norfolk, this fast-paced British detective novel is a dark murder mystery that will keep you guessing until the very end when the final shocking twist is revealed.
A Dark Sin is the eighth novel in the Hidden Norfolk series of thrillers from the million-copy selling British crime writer, JM Dalgliesh, the author of the Dark Yorkshire books. Perfect for fans of LJ Ross, JD Kirk, Angela Marsons, Alex Smith and Damien Boyd.
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J M Dalgliesh
Before he ever penned a crime scene or built the quiet tension of a small-town mystery, J.M. Dalgliesh was drawn to the shadows that linger at the edges of everyday life—the things left unsaid, the truths that hide beneath the surface. Raised in Norfolk, England, his early years were spent surrounded by the kind of windswept coastlines and weather-beaten streets that would later seep into the moody, atmospheric settings of his novels.
Dalgliesh didn’t follow the traditional literary path. His journey into writing came after years of working with people from all walks of life, experiences that gave him a sharp eye for the unspoken complexities of human nature. That empathy, coupled with a natural instinct for suspense, forms the backbone of his storytelling. His books often explore the fractures beneath seemingly tranquil communities, peeling back layers of civility to reveal the quiet violence that can lurk within.
Hidden Norfolk
Tucked away on England’s brooding east coast, where the land bleeds into mist and marsh, the Hidden Norfolk series unfolds with quiet intensity. It’s here—beneath the surface of a place known more for coastal charm than crime—that the past lingers like fog and truth is a slippery, shifting thing.
Following Detective Inspector Tom Janssen, each story peels back the veneer of village life, revealing the tension, trauma, and long-buried secrets that ripple just beneath. These aren’t crimes of convenience—they’re rooted deep in character, shaped by community and carried out in silence. In this world, justice isn’t clean-cut, and resolution rarely comes without personal cost.
Hidden Norfolk consists of sixteen books and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.
