The Couple Next Door: A Novel

A NEW YORK TIMES BESTSELLER

“Lapena’s books are addictive!”—Freida McFadden, #1 New York Times bestselling author of The Housemaid

“Shari Lapena is far and away one of the best psychological thriller writers in the world...She is intensely bingeable.” —Lisa Jewell

It all started at a dinner party. . .

A domestic suspense debut about a young couple and their apparently friendly neighbors—a twisty, rollercoaster ride of lies, betrayal, and the secrets between husbands and wives. . .

Anne and Marco Conti seem to have it all—a loving relationship, a wonderful home, and their beautiful baby, Cora. But one night, when they are at a dinner party next door, a terrible crime is committed. Suspicion immediately lands on the parents. But the truth is a much more complicated story.

Inside the curtained house, an unsettling account of what actually happened unfolds. Detective Rasbach knows that the panicked couple is hiding something. Both Anne and Marco soon discover that the other is keeping secrets, secrets they've kept for years.

What follows is the nerve-racking unraveling of a family—a chilling tale of deception, duplicity, and unfaithfulness that will keep you breathless until the final shocking twist.

Shari Lapena is the internationally bestselling author of nine thrillers, including The Couple Next Door, which have all been New York Times, Sunday Times, and Globe and Mail bestsellers. Lapena’s books have been sold in forty territories around the world. She lives on a farm outside Toronto.

“Meticulously crafted and razor-sharp. The Couple Next Door lingers long after you turn the final page.”
—Harlan Coben, #1 New York Times bestselling author of Fool Me Once

"The twists come as fast as you can turn the pages."
—People

"Provocative and shocking. One crime, an entire neighborhood of suspects, secrets and lies. How well do we ever know those around us? The Couple Next Door will keep you glued the pages in search of the answer. Even then, you'll never guess the truth...until it's too late.”
—Lisa Gardner, #1 New York Times bestselling author of Find Her

“I read this novel at one sitting, absolutely riveted by the storyline. The suspense was beautifully rendered and unrelenting!”
—Sue Grafton,New York Times bestselling author of Y is for Yesterday

“Real men read women writers–because of books like this. Trust me.”
—Lee Child, #1 New York Times bestselling author of Make Me

"A twisty, utterly riveting tale that will send readers on a wild rollercoaster ride of emotions. Shocking revelations kept me turning the pages like a madwoman."
—Tess Gerritsen, New York Times bestselling author ofPlaying with Fire

“Expertly paced and finely crafted, The Couple Next Door is a gripping thriller of the highest order. I couldn’t put it down.”
—A. J. Banner, bestselling author of The Good Neighbor

“Gripped me from the very beginning to the very end!”
—Becky Masterman, author of Rage Against The Dying

“Brilliant! This utterly riveting psychological thriller hurtles along at breakneck speed, never giving you the opportunity to catch your breath. Twisty, turny, and unputdownable.”
—C. L. Taylor, bestselling author of The Lie

“Exquisitely torturous tension.”
—NPR.org

“Where did that baby go! It’s hard not to read to the end to find out, and the twists waiting there are gratifyingly clever.”
—USA Today

“The many never-saw-them-coming twists and questionable characters. . . will keep you on the edge of your seat. First-time novelist Lapena’s writing is spare and tense, and it makes The Couple Next Door a compulsive read. The last line is absolutely killer.”
–Good Housekeeping

“[A] well-sculpted domestic thriller . . . highly suspenseful . . . Twists are subtly revealed with aplomb, taking the story to increasingly unpredictable levels.”
—Associated Press

“[A] suspenseful, heart-wrenching debut. . . After numerous twists and turns, Lapena delivers one final, deftly crafted surprise.”
—Publishers Weekly

“Brisk prose style and character development are almost beside the point in Lapena’s suspense-fiction debut; this is a plot-driven page-turner, and even the most character-focused readers will find it hard to put down.”
—Booklist

The Couple Next Door by Shari Lapena is a fast-paced domestic thriller that begins with every parent’s worst nightmare and then peels back layer after layer of secrets, lies, and betrayal. The story centers on Anne and Marco Conti, a seemingly ordinary young couple living in a quiet suburban neighborhood. They have a six month old baby daughter named Cora, and from the outside, their life looks comfortable: a nice house, a new baby, dinner parties with the neighbors. The novel opens on the night that everything goes wrong. Anne and Marco are at a dinner party next door with their glamorous neighbors, Cynthia and her husband Graham. Cynthia has insisted on an adults only evening, and when their babysitter cancels at the last minute, Anne wants to stay home. But Marco persuades her to come anyway, arguing that they’ll just bring the baby monitor and check on Cora every half hour. Anne reluctantly agrees. They leave Cora asleep in her crib in their unlocked house, a decision that hangs over every moment that follows.

As the evening goes on, Anne drinks too much and becomes increasingly uncomfortable. Cynthia is flirtatious and provocative, especially with Marco, and the atmosphere at the dinner table feels tense and slightly cruel. Anne’s postpartum depression and fragile self esteem make her feel exposed. Marco tries to keep the peace, repeatedly slipping back to check on the baby. But in the early hours of the morning, when Anne and Marco finally return home, they walk into a nightmare: the front door is ajar, the crib is empty, and baby Cora is gone. The panic that follows is immediate and overwhelming. The police are called, and the story quickly becomes a child abduction case. The house becomes a crime scene, the neighbors become potential witnesses or suspects, and Anne and Marco’s lives are instantly under a harsh spotlight.

Detective Rasbach, the seasoned investigator assigned to the case, quickly senses that something about the couple’s story doesn’t add up. He finds it suspicious that they left the baby alone and that the door was unlocked. He also notices cracks in Anne and Marco’s united front. Anne is shaky, emotional, and guilt ridden, while Marco is composed and practical, sometimes too much so. The detective’s job is to question everything: Was Cora taken by a stranger? Was it a random crime? Or is someone closer to the family involved? As Rasbach interviews the Contis, their neighbors, and Anne’s wealthy parents, it becomes clear that the kidnapping is tangled up with deeper issues: money trouble, marital strain, mental health, and long standing resentment.

Anne and Marco, who seemed like a normal couple, are revealed to be anything but perfect. Anne is struggling with postpartum depression and possibly deeper psychological issues. There are suggestions of past breakdowns, blackouts, and memory gaps. She has trouble trusting her own mind, which makes her particularly vulnerable as the investigation proceeds. Marco, meanwhile, is hiding a serious business crisis. His company is failing, and he has been keeping the extent of the financial trouble from Anne and her parents. This secret matters because Anne’s parents are extremely wealthy, and Marco’s connection to their money gives him both motive and opportunity for desperate actions. Detective Rasbach becomes suspicious that the kidnapping might be connected to ransom, greed, or an attempt to manipulate Anne’s parents.

Anne’s parents, especially her cold and controlling mother, add another layer of tension. They have never fully approved of Marco, whom they see as financially dependent and not good enough for their daughter. When Cora disappears, Anne’s mother is quick to question Marco’s choices and subtly imply blame. The parents’ wealth and influence also complicate the investigation: they can fund media campaigns, hire private help, and exert pressure, but they also have secrets of their own. The reader begins to suspect that almost everyone in the story is lying about something, and that Cora’s kidnapping may be the result of overlapping schemes rather than a single simple crime.

As the plot unfolds, Shari Lapena uses short chapters and rapid shifts in perspective to build suspense. We move between Anne’s frightened, fractured thoughts, Marco’s panicked attempts to control the situation, and Rasbach’s cool, analytical observations. This structure gradually reveals that Marco has indeed been involved in something sinister. Under severe financial pressure, he made a terrible decision before the night of the dinner party—a decision that opened the door to the kidnapping. Believing he could manage a controlled situation, he got entangled with dangerous people. When things go wrong, he is forced to keep lying, even to Anne, in the hope that he can somehow protect them both and get their child back. The reader watches him sink deeper into deception, fueled by fear and regret.

Anne’s mental state deteriorates as the days pass without news of Cora. She blames herself completely for leaving the baby alone and is haunted by images of what might be happening to her. She experiences intense anxiety, hallucinations, and moments when she can’t trust what she sees or remembers. The narrative plays with the possibility that Anne herself may have done something terrible without remembering it. Was she so distressed that she harmed her own child? Did she sleepwalk? Is someone taking advantage of her fragile mind to plant doubt and fear? These questions keep the reader unsettled and force us to question every character’s version of events.

The neighbors, Cynthia and Graham, also become suspect. Cynthia’s flirtation with Marco, her drinking, and her seemingly careless attitude add to the sense that she might be involved, either as a temptress or as part of a larger scheme. Graham, quieter and more reserved, may be hiding motives of his own. The idea of “the couple next door” shifts from a simple description to a symbol of how little we truly know about the people living right beside us. Friendly dinners and polite conversations easily mask hidden desires, resentments, and plans.

As the investigation continues, secrets are revealed one by one. There are lies about where people were at specific times, lies about money, lies about previous relationships, and lies about mental health history. The kidnapping itself is eventually understood not as a random act, but as part of a carefully orchestrated plan that spiraled out of control. The tension builds to a series of twists in which the reader’s understanding of who is victim and who is villain repeatedly shifts. Detective Rasbach remains a steady presence, always watching, quietly assembling the pieces while the Contis’ world comes apart.

When the truth about Cora’s disappearance finally comes to light, it is both shocking and grimly plausible. The resolution involves betrayal by someone they trusted and choices made under pressure that cannot be easily forgiven. Anne and Marco are forced to face not only what has been done to them, but what they have done to each other: the lies they told, the doubts they nurtured, and the ways they failed to protect their child. The aftermath is emotionally messy, rather than neatly tied up. Love, guilt, and anger all coexist, and the question of whether their marriage can survive hangs in the air.

In the final stretch of the novel, Lapena adds one more jarring twist that underscores the book’s central theme: we never fully know what people are capable of, even in our own homes. The quiet suburban street that seemed safe at the beginning now feels like a place where tension and violence can erupt behind any closed door. The Couple Next Door ultimately is not just about a kidnapped baby; it is about how fragile trust can be, how quickly ordinary lives can unravel when secrets collide, and how the line between victim and perpetrator can blur when fear, desperation, and love are all in play.