What Lies Between Us

ITW Thriller Award winner

International Book Awards winner

Nina can never forgive Maggie for what she did. And she can never let her leave.

They say every house has its secrets, and the house that Maggie and Nina have shared for so long is no different. Except that these secrets are not buried in the past.

Every other night, Maggie and Nina have dinner together. When they are finished, Nina helps Maggie back to her room in the attic, and into the heavy chain that keeps her there. Because Maggie has done things to Nina that can’t ever be forgiven, and now she is paying the price.

But there are many things about the past that Nina doesn’t know, and Maggie is going to keep it that way―even if it kills her.

Because in this house, the truth is more dangerous than lies.

John Marrs is an author and former journalist based in Northamptonshire, England. After spending his career interviewing celebrities from the worlds of television, film and music for numerous national newspapers and magazines, he is now a full-time author. Follow him at www.johnmarrsauthor.com, on Instagram @johnmarrs.author and on Facebook at www.facebook.com/johnmarrsauthor.

An Amazon Best Book of the Month: Mystery, Thriller & Suspense

“Dark and disturbing.” —Crime Monthly

“[Marrs’] most sinister novel to date.” —Daily Express

“A dark, suspenseful, top class psychological thriller.” —My Weekly

“A modern-day Whatever Happened to Baby Jane that is dark, twisted, and full of surprises.” —Mark Edwards, bestselling author of Here to Stay and The Retreat

“An excellent psychological thriller. A one-sitting read about a daughter who keeps her mother locked in the attic. Twisty, moving, and chilling.” —Sarah Pinborough, bestselling author of Behind Her Eyes

“Great premise and masterful use of twists.” —Claire McGowan, bestselling author of What You Did

“A tense, thrilling read—I found it impossible to put down. It’s dark and twisted, and I loved it.” —Alex Michaelides, bestselling author of The Silent Patient

“Totally absorbing, creepy, intense and utterly compelling. I loved it.” —Mel Sherratt, bestselling author of the DS Grace Allendale series and The Girls Next Door

“I loved it although I’m not sure I’ve read anything as dark, ever…” —Susi Holliday, author of Violet and The Lingering

“It’s a pitch-perfect psychological thriller, with a captivating power play at its heart. I don’t recall reading a novel that so expertly toyed with my sympathies. Great stuff!” —Simon Lelic, bestselling author of The House and The Liar’s Room

“Packed full of darkness and suspense, John Marrs once again proves himself as a voice to be reckoned with in [What Lies Between Us].” —Phoebe Morgan, author of The Doll House and The Girl Next Door

“It’s amazing—a sinister exploration of a very unusual female relationship. I can’t get Maggie and Nina out of my head. It’s a stunner.” —Robin Morgan-Bentley, author of The Wreckage

“Tense, affecting, and well-crafted, and keeps you in the dark until the explosive conclusion.” —Louise Beech, author of How to Be Brave and The Mountain in My Shoe

“Magnificent. Extremely dark and twisted and tension filled and incredibly well written. First class.” —Claire Allen, author of Her Name Was Rose

“What a twisted and sinister book that was. Loved it.” —Peter Swanson, author of The Kind Worth Killing

What Lies Between Us by John Marrs is a dark, gripping psychological thriller about a mother and daughter bound together by love, hatred, guilt, and secrets so destructive that they have twisted their entire lives. The novel largely takes place inside one house, where Maggie, a middle aged woman, is kept chained in the attic by her adult daughter, Nina. At first, this immediately raises the question: what could a mother possibly have done to deserve such treatment from her own child? Marrs builds the story by moving back and forth between the past and the present, gradually revealing the complicated history between Maggie and Nina, and showing how every lie, every omission, and every misguided attempt to protect has contributed to their warped, toxic relationship. The book is as much about the slow accumulation of emotional damage as it is about the shocking acts that erupt from it.

In the present timeline, Nina appears calm, controlled, and eerily detached as she brings Maggie food, talks to her, and then returns her to her chains. This is not a sudden kidnapping; it is a routine that has been going on for some time. At first, Nina seems monstrous—a daughter who tortures her own mother. But as the chapters unfold, it becomes clear that Nina sees herself as the victim of Maggie’s choices. The attic becomes a twisted confessional where Maggie and Nina revisit their shared past, each remembering events differently, each convinced that her version is the truth. Marrs uses this claustrophobic setting to intensify the sense of unease. The world outside the house barely intrudes; instead, the focus is tightly on these two women and the tangled emotional web between them.

The story moves back to Nina’s childhood, when Maggie raises her as a single mother. On the surface, Maggie appears loving and devoted, doing her best to provide a stable home and a sense of security. However, there are cracks beneath that surface. Maggie’s own past is marked by trauma and secrets she refuses to fully confront, and those secrets bleed into her parenting. She makes decisions with the intention of protecting Nina, but those decisions often involve hiding the truth, manipulating facts, and controlling Nina’s world so tightly that Nina never gets a clear sense of reality. Maggie’s love is genuine, but it is also possessive and frightened. She believes that shielding Nina from painful truths is the best way to keep her safe, not realizing that this very shielding will eventually become the source of deep betrayal.

As Nina grows up, she begins to notice inconsistencies in what she’s told and what she sees. People disappear from their lives; stories about her father and other important figures change or don’t quite make sense. Her questions are deflected, and her curiosity is treated more like a threat than a natural part of growing up. Maggie’s secrecy and controlling behavior teach Nina that she cannot fully trust her mother, yet Maggie remains the center of her world. This mix of dependency and suspicion is emotionally corrosive. Nina’s sense of self becomes fragile, built on half-truths and gaps. She tries to be the daughter Maggie wants, but she also feels an increasing need to break free and uncover what has been hidden from her.

The novel also introduces other characters—friends, lovers, neighbors—who pass through Nina and Maggie’s lives and help shape the tragedy. Some of these people try to help, some unwittingly make things worse, and some become victims of the family’s dysfunction. Marrs uses them to show how the Lee household’s damage doesn’t stay contained within four walls; it spills outward, dragging others into its orbit. Yet even as these side characters add complexity, the focus always returns to the central relationship. Every major event—romantic relationships, personal setbacks, moments of happiness—is filtered through how Maggie and Nina react to each other and to the secrets at the heart of their family history.

A crucial element in the book is the slow revelation of what Maggie has done and what Nina has done in response. Early on, the reader suspects that Maggie must have committed some terrible act to earn Nina’s rage. As the past unfolds, it becomes clear that Maggie has indeed made deeply flawed, sometimes morally shocking choices, especially involving Nina’s father and other people close to them. However, Marrs complicates this by showing Maggie’s motivations: fear, trauma, and a panicked desire to protect her daughter at any cost. She is not purely evil; she is a person whose love is distorted by her own unresolved wounds. Nina, in turn, is not simply an innocent victim, either. Her responses to Maggie’s actions grow increasingly extreme, crossing lines of morality and sanity, until her desire for justice and punishment turns into something darker and more unstable.

What makes the novel particularly unsettling is the way it shows how love and cruelty can coexist. Maggie genuinely believes she has acted in Nina’s best interest, even when the consequences are catastrophic. Nina genuinely believes she is finally asserting control and making her mother face the pain she caused. Both women feel wronged, both feel justified, and both have moments of vulnerability and tenderness that sit uneasily alongside the violence and manipulation. Marrs avoids simple villains and heroes. Instead, he presents two damaged people locked in a cycle of mutual destruction, their roles as mother and daughter twisted into something almost unrecognizable.

The narrative structure, shifting between past and present, allows the reader to slowly understand the full picture while Maggie and Nina confront each other piece by piece. Each new revelation makes previous scenes look different, forcing you to reconsider your sympathies. Early chapters may make you side more with Nina and condemn Maggie; later chapters may soften your view of Maggie and highlight Nina’s capacity for harm. The novel plays with this shifting empathy deliberately, asking how far love can bend before it breaks, and how much harm people can cause while still insisting they acted out of care.

As the story moves toward its climax, the tension between mother and daughter reaches a dangerous peak. The attic confrontations become more intense, and their shared history is almost fully laid bare. The truth behind Nina’s childhood, the fate of important people in their lives, and the decisions Maggie made all converge into a clear, disturbing picture. Both women are forced to recognize the consequences of years of lies and silence. There is a sense that something irreversible is coming—that their relationship has reached a point where it cannot be repaired, only ended or transformed in a way that will leave lasting scars. The question is not just what new truth will be revealed, but what Nina will ultimately do with that truth, given the power she now holds over Maggie.

The ending of “What Lies Between Us” maintains the novel’s tone of unease and moral ambiguity. Marrs does not offer a neat resolution where everyone learns a lesson and moves on. Instead, the conclusion underscores how deeply the past can shape the present, and how some damage cannot be undone. The final choices made by these characters reflect all the accumulated hurt, misplaced love, and twisted sense of justice that have defined their lives. The reader is left with a haunting impression of a family destroyed from the inside—not by one single act, but by the many things they could never say honestly to one another. The title itself captures the essence of the story: what lies between Maggie and Nina are not just secrets, but years of unspoken resentment, confused love, and the terrible weight of everything they chose to hide.

This novel ultimately is about the cost of secrecy and the way trauma, if never confronted, can be passed down and magnified across generations. It shows how a parent’s attempt to control a child’s life, even out of fear or love, can create exactly the nightmare they were trying to prevent. It also shows how a child shaped by lies can grow into an adult capable of terrible things, believing that pain is the only language left that the other person will understand. In its confined setting and psychological intensity, “What Lies Between Us” delivers a chilling, emotionally charged exploration of the darkest corners of family bonds and the devastating power of the truths we refuse to face.