Sycamore Gap (DCI Ryan Mysteries, 2)

The explosive second book in internationally bestselling author LJ Ross's DCI Ryan Mystery series, a moody, chilling mystery full of obsession, betrayal, and a history that won't stop repeating…

The past never stays buried for long…

Detective Chief Inspector Ryan thought he'd left his past behind. But when the skeleton of a young woman is discovered inside an ancient Roman wall at Sycamore Gap, the case pulls him back into the darkness he's tried to forget.

The victim has been buried for a decade―and every clue Ryan uncovers only deepens the mystery. As the investigation unfolds, old secrets surface, and Ryan finds himself drawn into a deadly game of cat and mouse with a killer who always seems one step ahead.

Set against the haunting backdrop of Hadrian's Wall, Sycamore Gap delivers gripping twists, relentless tension, and a chilling reminder that the past is never truly gone.

LJ Ross is an international bestselling author, best known for creating atmospheric mystery and thriller novels, including the DCI Ryan series of Northumbrian murder mysteries which have sold over 12 million copies worldwide.

Her debut, Holy Island, was released in January 2015 and reached number one in the Amazon UK and Australian charts. Since then, she has released more than thirty further novels, all of which have been top three global bestsellers and most of which have been UK #1 bestsellers. Louise has garnered an army of loyal readers through her storytelling and, thanks to them, most of her books reached the coveted #1 spot whilst only available to pre-order ahead of release. Her eleventh novel, "The Infirmary", is a prequel story and is also available as a major Audible Originals audio-drama starring Tom Bateman, Kevin Whately, Bertie Carvel, Hermione Norris and Alun Armstrong.

Her first hardback edition "Berwick" (DCI Ryan #24) was released by Cornerstone in February 2026 and was an instant Sunday Times Bestseller.

In addition to her DCI Ryan series, Louise has created a new series of thriller novels based around the central character of ‘Dr Alexander Gregory’, whose work as a psychological profiler takes him around the world.

"The Cove" (the first book in her new Summer Suspense Mysteries series) was released in 2021 and followed up by "The Creek" in 2022, "The Bay" in 2023, and "The Haven" in 2024. This is a new series of standalone romantic suspense novels featuring strong female protagonists. "The Lizard" will follow in summer 2026.

The novels all are available to purchase in e-book, paperback and audiobook formats on the Amazon store, as well as in libraries and book shops around the world.

Louise was born in Northumberland, England. She studied undergraduate and postgraduate Law at King’s College, University of London and then abroad in Paris and Florence. She spent much of her working life in London, where she was a lawyer for a number of years until taking the decision to change career and pursue her dream to write. Now, she writes full-time and lives with her family Northumberland, where she enjoys reading all manner of books, travelling and spending time with family and friends.

Louise is a keen philanthropist, and is pleased to have supported numerous non-profit programmes in addition to founding several of her own, including the Lindisfarne Reading Challenge and the Lindisfarne Prize for Debut Crime Fiction.

Sycamore Gap by LJ Ross is a crime thriller set in Northumberland, where the dramatic landscape is as important to the story as the investigation itself. The novel follows Detective Chief Inspector Ryan and his team as they are pulled into another case that seems rooted in the tensions, secrets, and buried pain of the local community. As with much of LJ Ross’s work, the book combines police procedure, emotional backstory, and atmosphere, while using the rugged beauty of the north of England to heighten the sense of mystery and danger. The title refers to the famous Sycamore Gap near Hadrian’s Wall, and that setting gives the novel an immediate feeling of place, history, and quiet menace.

At the heart of the story is a murder investigation, but the case is not just about finding a killer. It is also about uncovering the hidden pressures inside families, friendships, and small communities where everyone knows one another and yet not everything is known. The victim’s death raises questions that reach beyond a single crime scene, and Ryan’s team has to piece together clues that appear to point in different directions. As the investigation unfolds, the detectives begin to see that the case is tangled up with old grievances, personal betrayals, and secrets that people have spent years trying to protect. The result is a plot that moves through both present danger and past trauma.

Ryan remains a steady and central figure in the series, and in Sycamore Gap his methodical approach to policing is matched by the emotional weight he carries from previous cases and personal responsibilities. He is not a detached detective who sees the job as only a puzzle; he is someone who feels the cost of violence and loss, even when he keeps those feelings tightly controlled. That balance between professionalism and emotional depth is one of the reasons the series works so well. Ryan’s strength lies in his ability to keep going, to listen carefully, and to follow the trail even when the answers are uncomfortable. His team supports him with their own expertise and instincts, and together they create the kind of investigative unit that feels grounded and believable.

The relationship between the detectives and the wider community matters just as much as the formal inquiry. LJ Ross often writes about places where history is layered into the land itself, and Sycamore Gap uses that to good effect. The landscape is not just a backdrop; it shapes the mood of the story. The ancient wall, the open countryside, and the iconic tree at Sycamore Gap all contribute to a sense that the present is always in conversation with the past. That makes the mystery feel deeper, because the characters are not only dealing with a crime in the present tense, but also with legacies that people have carried for years. The setting reinforces the idea that some wounds are slow to heal and some secrets are impossible to bury forever.

The novel also explores how people present themselves to the world versus what they are actually hiding. In a close-knit region, reputations matter, and the pressure to keep up appearances can be strong. Some characters seem ordinary at first glance, only for the investigation to reveal hidden motives, troubled histories, or difficult choices they have made. This creates a layered reading experience, because the mystery is not only about solving who committed the crime, but also about understanding why people behave as they do when fear, loyalty, shame, or grief are involved. The book uses these revelations to build tension gradually, rather than relying on one sudden twist after another.

Emotionally, Sycamore Gap carries the familiar strengths of the series: a sense of moral seriousness, concern for victims, and an attention to the human consequences of violence. The detectives are not simply chasing a culprit; they are trying to restore a kind of order to lives that have been disrupted. That gives the book a compassionate dimension, even amid the darkness. Families are affected, relationships are strained, and the ripple effects of the central crime spread through the town and beyond. The novel pays attention to those aftershocks, which helps the story feel more real and emotionally grounded.

There is also a strong undercurrent of tension between modern policing and the weight of older traditions. The Northumberland setting, with its ancient landmarks and historical significance, adds a feeling that time is layered and that the past is always close. This creates a particularly effective atmosphere for a detective novel, because the investigation feels like it is moving through both literal terrain and emotional history. The detectives must navigate not only evidence and interviews, but also local loyalties, unspoken resentments, and the sense that some people would rather keep quiet than reopen old wounds. That resistance makes the case more difficult, but it also gives the story a sense of realism.

The pacing of the novel is structured around the unfolding investigation, with each discovery leading to new questions and forcing the team to look again at what they thought they understood. LJ Ross keeps the story moving while allowing enough room for character moments, emotional reflection, and the details of place that give the series its appeal. The balance between suspense and atmosphere is one of the book’s strongest qualities. Readers who enjoy crime fiction often want both a gripping mystery and a vivid setting, and *Sycamore Gap* delivers on both.

By the time the investigation reaches its resolution, the novel has revealed not only who is responsible, but also how much damage can be hidden beneath ordinary routines and familiar faces. The ending brings the expected sense of closure for the case, but it also leaves the broader impression that life in this world remains complicated, with each solved crime carrying echoes of the next. Ryan and his team emerge having done their work, but not untouched by it. That is part of the appeal of the series: it respects the seriousness of murder while also honoring the resilience of those who investigate it.

Overall, Sycamore Gap is a strong entry in the DCI Ryan series, combining atmospheric setting, solid mystery plotting, and emotionally aware characterization. It is a novel about secrets, loss, and the way the past continues to shape the present, all set against one of the most striking landscapes in northern England.