The Boyfriend: The Riveting New Psychological Thriller From Bestselling Author of the Housemaid

A new, twisting thriller from the multi-million selling sensation and #1 New York Times and Sunday Times bestselling author of The Teacher and The Housemaid Series

She's looking for the perfect man. He's looking for the perfect victim.

Sydney Shaw, like every single woman in New York, has terrible luck with dating. She's seen it all: men who lie in their dating profile, men who stick her with the dinner bill, and worst of all, men who can't shut up about their mothers. But finally, she hits the jackpot.

Her new boyfriend is utterly perfect. He's charming, handsome, and works as a doctor at a local hospital. Sydney is swept off her feet.

Then the brutal murder of a young woman―the latest in a string of deaths across the coast―confounds police. The primary suspect? A mystery man who dates his victims before he kills them.

Sydney should feel safe. After all, she is dating the guy of her dreams. But she can't shake her own suspicions that the perfect man may not be as perfect as he seems. Because someone is watching her every move, and if she doesn't get to the truth, she'll be the killer's next victim...

A dark story about obsession and the things we'll do for love, #1 New York Times bestselling author Freida McFadden proves that crimes of passion are often the bloodiest…

Freida McFadden’s The Boyfriend is a fast-moving psychological thriller about modern dating, obsession, deception, serial murder, and the terrifying possibility that the person who seems most perfect may be the person you should fear most. Published in October 2024, the novel follows Sydney Shaw, a thirty-four-year-old New Yorker who has become increasingly frustrated with online dating. After a series of disappointing dates, Sydney finally meets Tom Brewer, an attractive and seemingly caring doctor who appears to be everything she has been looking for. But Sydney’s happiness is interrupted by the murder of a young woman, one of several killings connected to a mysterious man who dates women before murdering them. Suddenly, Sydney’s seemingly perfect romance becomes a source of danger. The central question of the novel is deceptively simple: can Sydney trust her boyfriend, or has she unknowingly fallen in love with a killer?

At the beginning of The Boyfriend, Sydney Shaw is presented as an ordinary single woman struggling with the exhausting realities of contemporary dating. She uses an online dating app called Cynch, hoping to find a serious relationship, but her experiences are mostly disappointing. Some men lie about themselves, some are inconsiderate, and others reveal unpleasant personalities almost immediately. Sydney has reached the point where finding a genuinely good man feels nearly impossible. This opening gives the novel a humorous and recognizable quality before the story gradually becomes much darker. The dating-app world is presented as a place where people constantly create idealized versions of themselves, and that idea becomes crucial to the thriller. In a world built on profiles, photographs, selective information, and carefully managed impressions, how can anyone really know the person on the other side of the screen?

Sydney’s situation changes when she meets Tom Brewer. Unlike her previous dates, Tom appears almost impossibly perfect. He is handsome, charming, attentive, and works as a doctor. Sydney quickly becomes emotionally invested in him, and the relationship seems to offer exactly what she has been hoping for. The official description deliberately frames the novel around the contrast between Sydney’s search for “the perfect man” and a killer’s search for “the perfect victim.” That contrast establishes the central tension of the novel. Sydney believes she has finally escaped the frustrations of dating, while the reader gradually becomes aware that romance itself may be the mechanism through which danger enters her life.

The murder investigation changes everything. A young woman is brutally killed, and the crime appears to be connected to a series of similar deaths. The police begin looking for a mysterious man who dates his victims before murdering them. Sydney’s former boyfriend, Jake Sousa, is a homicide detective assigned to the investigation, which makes the situation even more complicated. Sydney is now emotionally connected to a man who seems wonderful, while her ex is investigating murders that may have been committed by someone who uses dating relationships to get close to women. Publishers Weekly notes that the killings are linked to the dating app Cynch and that the novel alternates between Sydney’s present-day perspective and Tom’s past.

This structure is one of the most important features of The Boyfriend. McFadden does not tell the story entirely from Sydney’s perspective. Instead, the narrative moves between the present and the past, allowing readers to learn about Tom’s history while simultaneously watching Sydney’s relationship with him develop. The past sections introduce Daisy, a woman who becomes important to Tom’s history. At first, these chapters seem like a separate romantic story, but their significance gradually becomes clearer. McFadden uses the shifting timeline to plant clues, create suspicion, and encourage readers to develop theories about the identities of the killer and the victims.

Tom is deliberately difficult to understand. He can be affectionate and attentive one moment and distant the next. He seems to care about Sydney, yet there are details about his life that do not quite make sense. His professional background becomes questionable, and certain aspects of his behavior begin to look suspicious. Sydney notices some of these inconsistencies, but she is also emotionally invested in the relationship. This creates one of the book’s central psychological tensions: when someone we love behaves strangely, do we interpret the behavior honestly, or do we find explanations that allow us to continue believing what we want to believe?

Sydney’s suspicion gradually increases. She begins to notice details that make Tom seem less trustworthy. His stories do not always fit together neatly, and his behavior around certain subjects becomes unsettling. The fact that he is connected to medicine also adds an uncomfortable dimension to the story because he possesses knowledge of the human body and death. The novel repeatedly makes Sydney—and the reader—wonder whether the seemingly perfect doctor could secretly be the murderer being pursued by the police.

At the same time, the story introduces several possible suspects. Sydney’s neighbor Randy attracts suspicion because of his unsettling behavior and his relationship with Gretchen, Sydney’s friend. Kevin, one of Sydney’s unpleasant dating experiences, also appears suspicious. These characters function as red herrings, encouraging the reader to settle on an explanation before McFadden pulls attention toward another possibility. The novel’s thriller mechanics depend heavily on this process of suspicion. Almost every character can be viewed through two lenses: what they appear to be and what they might secretly be hiding.

Jake, Sydney’s ex-boyfriend, serves as an important counterbalance to Tom. As a police officer investigating the murders, Jake approaches the situation from a professional perspective. His relationship with Sydney is complicated by their romantic history, but his investigation gives him access to information that Sydney does not have. This creates another layer of tension. Sydney wants to believe in her new relationship, while Jake has reason to be suspicious of the circumstances surrounding the murders. The romantic triangle between Sydney, Tom, and Jake therefore becomes intertwined with the criminal investigation.

One of the novel’s strongest themes is the danger of confusing attraction with safety. Sydney’s attraction to Tom initially makes him seem trustworthy. His appearance, career, manners, and attention create an image of stability. But the thriller repeatedly asks whether these qualities actually tell us anything about someone’s character. A person can look successful and respectable while hiding a disturbing past. McFadden uses the dating world as an ideal setting for this theme because dating is fundamentally an exercise in deciding how much of another person to trust before you truly know them.

The story also examines obsession and the darker side of romantic attachment. Love can encourage people to overlook warning signs, rationalize suspicious behavior, and become emotionally dependent on someone who may not deserve their trust. The official description emphasizes that the novel is about obsession and the things people may do for love. As the story progresses, this idea becomes increasingly important. The book is not simply asking who the murderer is; it is asking what happens when love becomes so powerful that it overrides judgment.

The past storyline involving Tom and Daisy eventually becomes crucial to understanding the present. Tom’s earlier relationship contains its own disturbing history, including accusations surrounding the deaths of young women. What initially appears to be a straightforward story of youthful romance gradually becomes connected to the murders. McFadden uses these chapters to show that the past cannot remain separate from the present. The characters may attempt to move forward, change their identities, or create new lives, but old secrets continue to influence their choices.

As Sydney investigates more closely, she begins collecting small pieces of evidence. A burner phone, suspicious behavior, inconsistencies about Tom’s employment, and other seemingly minor details begin to form a larger pattern. McFadden’s style depends on these small clues. Individually, they may not prove anything, but together they create an increasingly disturbing picture. This is characteristic of the author’s broader thriller technique: everyday objects and ordinary interactions can acquire enormous significance once the reader understands their connection to the larger mystery.

The novel’s major twist changes the reader’s understanding of the killer. The person responsible is not simply the obvious suspicious man the story seems to point toward. Instead, the truth involves Daisy and her connection to Gretchen. In the final revelation, Gretchen is revealed to be Daisy, and Daisy has been killing women who become involved with Tom because of her obsessive attachment to him. Multiple spoiler-based reviews identify this reveal as the central twist, explaining that Daisy killed Alison, Brandi, and others because she was jealous and wanted to eliminate women who threatened her relationship with Tom.

This revelation completely changes the meaning of the earlier chapters. Daisy’s actions are not random acts of violence. They arise from an extreme and possessive idea of love. She does not see herself simply as a murderer; she believes she is protecting her relationship with Tom. That makes the twist especially disturbing because the violence is rooted in emotional obsession. The novel shows how the language of love can become warped when affection turns into possession. Daisy does not merely want Tom to love her; she wants to remove anyone who could compete with her for his attention.

Tom’s own history is also more complicated than the initial mystery suggests. The book deliberately encourages readers to suspect him because of his behavior and the connections between his past and the murders. Yet Tom is not responsible for all the killings attributed to the mysterious dating-app killer. His past does contain disturbing events, however, and his relationship with Daisy becomes central to the final explanation. The distinction between guilt and innocence becomes complicated because the characters have different levels of responsibility for the violence surrounding them.

The climax occurs when Sydney and the others finally come into direct danger. Daisy’s identity and motives are exposed, and her obsession becomes impossible to conceal. Tom is forced to confront the reality of the woman he once loved, while Sydney becomes a potential victim because she represents another woman who has entered Tom’s life. The situation becomes a struggle between Daisy’s obsessive desire to possess Tom and Sydney’s need to survive. The psychological thriller finally becomes a direct physical confrontation.

The ending is deliberately unsettling because it does not offer the simple justice that readers might expect from a conventional serial-killer thriller. Tom and Daisy disappear after the final confrontation rather than receiving a straightforward punishment that neatly resolves everything. Sydney survives and eventually reconnects with Jake. A later message involving a lock of hair suggests that Tom and Daisy remain capable of violence even after disappearing. A spoiler-based account of the ending describes Sydney and Jake returning to their relationship while Tom and Daisy remain missing, with Sydney later receiving a threatening package. This unresolved quality reinforces one of the book’s darker ideas: danger does not always disappear simply because the immediate crisis has ended.

The ending also gives the title The Boyfriend an ironic significance. At first, the title seems to refer to Sydney’s dream of finally finding the right romantic partner. By the end, however, the idea of a boyfriend has become inseparable from danger, deception, obsession, and murder. The novel takes an ordinary relationship label and turns it into something threatening. A boyfriend can be a source of comfort, but in this story, intimacy also provides access. The closer people become, the more vulnerable they may become.

For readers searching for a The Boyfriend book summary, the novel can therefore be understood as a psychological thriller built around three interconnected mysteries: who is killing women associated with online dating, whether Tom is secretly responsible, and what happened in his past with Daisy. Sydney’s search for love becomes entangled with a murder investigation, while the alternating timelines gradually reveal that the truth is more complicated than the obvious suspects suggest. The story combines romantic suspense, serial-killer mystery, dating-app anxiety, psychological manipulation, and multiple twists. The publisher categorizes it as a thriller, psychological thriller, and serial-killer novel.

What makes The Boyfriend particularly effective for fans of Freida McFadden is its emphasis on rapid revelations. McFadden writes in a highly accessible style, using short chapters, shifting perspectives, unanswered questions, and suspicious details to encourage readers to keep turning pages. Publishers Weekly specifically praises the book’s quick succession of twists and its alternating timelines. The novel is less interested in slow literary investigation than in creating a chain of questions: Who is lying? Who is watching Sydney? Who is the killer? Is Tom dangerous? What is Daisy hiding? And how are all these apparently separate stories connected?

At a deeper level, however, The Boyfriend is a cautionary story about the gap between appearance and reality. Dating requires people to make judgments about strangers using incomplete information. A photograph can be manipulated. A professional identity can be exaggerated or concealed. A charming personality can hide obsessive intentions. A person who seems vulnerable can turn out to be dangerous. McFadden takes these ordinary uncertainties and pushes them to an extreme, creating a world in which the consequences of trusting the wrong person can be fatal.

The novel also explores how obsession can distort morality. Daisy’s actions are horrifying, but from her own perspective they are connected to devotion. She convinces herself that the women she eliminates are obstacles rather than human beings. This is one of the most disturbing aspects of the story because it shows how easily love can become corrupted when another person is treated as property. The difference between devotion and possession becomes increasingly important as the mystery unfolds.

Ultimately, The Boyfriend is a twist-driven psychological thriller about the dangers hidden behind romantic attraction. Sydney Shaw believes she has finally found the perfect man, only to discover that her new relationship is connected to a series of murders and a much darker history than she imagined. Tom’s mysterious past, Daisy’s obsession, Sydney’s investigation, and Jake’s police work eventually converge in a series of revelations that overturn the reader’s assumptions about the killer. The book’s central warning is simple but unsettling: sometimes the person who looks safest is the person you know least well.

For readers who enjoy The Housemaid, domestic and psychological thrillers, serial-killer mysteries, unreliable appearances, dating-app suspense, and books packed with last-minute twists, The Boyfriend offers a quick and accessible reading experience. It combines romance with danger and turns the search for love into a high-stakes investigation. More importantly, it shows why Freida McFadden’s thrillers are so effective for readers who enjoy constantly changing suspicions: just when the mystery appears solved, another secret emerges. In The Boyfriend, the greatest danger is not simply the killer hiding somewhere in New York. It is the possibility that love itself can become the perfect disguise for obsession.