John, the primary antagonist of the novel, conceals his homicidal nature behind the façade of a traditional romantic comedy love interest. When Jamie first meets him, he is presented as “late-eighties Bill Pullman cute” (26), embodying the archetype of the sensitive, endearing, and slightly shy suitor. His behavior during their date is meticulously crafted to align with rom-com conventions—he listens well, shares personal anecdotes, and expresses a sincere interest in Jamie’s passions. However, this manipulative performance is really designed to identify his target and draw her into his twisted narrative. John’s true nature is revealed incrementally through the killer’s actions, which systematically deconstruct romantic tropes. His character becomes the driving force behind the novel’s thematic focus on Using Romantic Tropes to Justify Violence.

John believes himself to be the hero of a real-life love story, and he misguidedly views the massacre as the conventionally romantic “grand gesture” that will prove his devotion. The displays he leaves behind are grotesque parodies of romance; the rose petals scattered over his victims, the heart fashioned from a victim’s intestines, and the card with a misquoted song lyric all demonstrate his inability to distinguish between affection and violence. In his final monologue, the full extent of his delusion becomes clear when he explains that the entire ordeal is a test. He seeks a woman who embodies both the aspirational Leading Lady and the resilient Final Girl, someone who will “fight to the end…to be with me” (301). This twisted logic exposes the dangerous underbelly of narratives that romanticize obsessive pursuit, showing how such ideals can be warped into a justification for predatory and violent behavior.

As an antagonist, John is methodical and intelligent, and his massacre at Serendipity is a meticulously planned event. He and his accomplice, Billie, prepared the venue by disabling security systems, removing exit signs, and confiscating phones, effectively trapping their victims in a space that mirrors a classic slasher film setting. He demonstrates a keen understanding of genre conventions, which he uses to manipulate the survivors and heighten the drama of his constructed narrative. His faked death is a calculated move to remove himself from suspicion and observe Jamie’s reaction, another test in his elaborate game. While he is a round character due to his complex motivations and the stark contrast between his persona and his true self, he undergoes no change or growth. His psychopathy is a fixed part of his identity that is unveiled to Jamie and the reader as the narrative progresses. He remains committed to his warped romantic vision until his death.

Wes serves as the novel’s deuteragonist (the character second in importance to the protagonist), and he is also Jamie’s primary love interest. Initially presented as just another speed dater, he is eventually revealed to be an undercover police detective investigating the very series of murders that culminates in the nightclub massacre. His character archetype is the protector, a role he assumes almost immediately after the massacre begins. Wes is proactive and courageous, taking the lead in arming the survivors, devising escape plans, and confronting threats, both from the killer and from within the group. His physical presence is described as imposing and athletic, contrasting with John’s softer demeanor. He’s defined by his steady competence under pressure, which hints at his profession as a homicide detective. Wes’s background provides him with a practical, real-world skill set that complements Jamie’s theoretical, genre-based knowledge, making them an effective team.

Despite his capability and tough exterior, Wes is also characterized by his impulsivity and emotional vulnerability. He admits to Jamie that he was suspended from the police force for punching a colleague who spoke disrespectfully of the killer’s victims, revealing his hotheadedness and a strong moral compass that can override his professional judgment. His interactions with Jamie reveal a softer, more unguarded side. He is the first to recognize and validate her expertise, telling her, “It’s the kind of thing that’s gonna keep us alive” (58). His feelings for her develop quickly under the extreme circumstances, a phenomenon Laurie identifies as “attraction under aversive conditions” (112), and his struggle to balance his protective instincts with his growing romantic interest is a central part of his arc. His confession in the janitor’s closet, where he admits Jamie made him forget his mission, is a moment of vulnerability that solidifies their connection.

Wes’s development is dynamic as he is forced to reconcile his professional identity with his personal feelings and his unexpected involvement in the very case he was investigating. He begins the night on a rogue, off-the-books investigation, but is quickly thrown into a fight for survival where his professional training is paramount. His journey is one of stripping away a professional facade to reveal the man beneath. He is a foil for both John and Stu, offering a healthy model of protective masculinity that contrasts sharply with John’s possessive and violent version. His calm leadership is a direct counterpoint to Stu’s aggressive and unhelpful antagonism. By the end of the novel, Wes has embraced both his role as a protector and his feelings for Jamie, demonstrating a capacity for both toughness and tenderness that aligns with the novel’s synthesis of slasher and rom-com archetypes.

Laurie Hamilton is Jamie’s best friend and a key supporting character who functions as a foil to the protagonist. A pragmatic and logical aspiring documentary filmmaker, Laurie represents a worldview grounded in reality, which contrasts sharply with Jamie’s academic focus on fictional genres. Initially, she is skeptical of Jamie’s dissertation, struggling to see the connection between slashers and rom-coms because her own preference is for films that document “aspects of real life” (4). This grounded perspective makes her a source of stability for Jamie. Despite her cynicism about romance and her disdain for genre films, Laurie is fiercely loyal and protective. Her affection is rarely demonstrated through overt gestures; for instance, she initially offers a “firm handshake” rather than an embrace to comfort Jamie. Instead, her love is shown through her actions, her sardonic terms of endearment, and her unwavering presence at Jamie’s side.

During the crisis, Laurie’s initial shock gives way to a practical resolve that complements Jamie’s strategic thinking. It is Laurie who suggests creating a map of the club and setting a time limit for their search, both logical steps that aid the group’s survival efforts. Although she is terrified, her primary concern is always Jamie. Her refusal to leave Jamie’s side and her eventual, reluctant escape through the air vent are driven by this deep-seated loyalty. The massacre forces her to express her emotions more directly, culminating in a tearful reunion where she finally hugs Jamie and admits, “You’re my favorite” (335). While she remains a fundamentally static character whose core personality does not change, the extreme circumstances of the novel push her to reveal the profound depth of her affection, making her a round character.

Billie, the secondary antagonist, acts as John’s accomplice. From her first appearance, she is hostile and standoffish, giving Jamie a “stink eye” and maintaining a cynical, dismissive attitude toward the other survivors. Her constant derision and lack of empathy create friction and suspicion within the group. Billie’s true role is revealed in the novel’s final act, exposing her as a participant in the massacre. She’s driven by a competitive desire to prove herself as John’s true “perfect match” by eliminating Jamie, whom she views as a rival. This twisted ambition makes her a foil for Jamie, representing a dark reflection of the desire to be The One, a classic rom-com archetype of destined romance. Ultimately, Billie is a disposable element in John’s narrative, a tool he uses and discards, and her unceremonious death highlights the self-destructive nature of her obsession.

Stu serves as a minor antagonist and red herring, a flat and static character whose primary role is to create internal conflict among the survivors. He’s abrasive, arrogant, and consistently makes poor decisions that endanger the group. His suggestion that the group split up is a classic slasher movie mistake that immediately establishes him as an unreliable and incompetent figure. He serves as a direct foil to Wes, challenging his leadership and creating a toxic masculine rivalry that threatens the group’s cohesion. His antagonism toward Jamie makes him a plausible suspect for the killer, misdirecting the characters as they attempt to determine the perpetrator. His brutal death serves as an escalation of the violence and removes a key source of internal dissent from the group dynamic.

Jennifer is a minor supporting character who embodies the archetype of the kind and friendly “girl next door.” She is introduced as a warm presence during the cocktail hour and remains a source of compassion and reason among the survivors, attempting to mediate conflicts and support others. She is one of the few characters who consistently trusts Jamie’s judgment, defending her against Stu’s accusations. Jennifer’s character arc shows a development from a gentle personality to a more resilient survivor. However, her shocking and sudden death at Billie’s hands in the final act serves as a classic slasher trope, underscoring the killer’s cruelty.

Dani is a minor supporting character whose primary function is to represent the authentic terror and vulnerability of a person caught in a horrific situation. Throughout the ordeal, she is consistently and overtly frightened, often crying and struggling to cope with the unfolding violence. Her character acts as a contrast to Jamie’s more analytical and proactive response to the crisis. Dani’s fear is a realistic touchstone for the reader, grounding the genre-aware narrative in genuine human emotion. Her death at the hands of John underscores his ruthlessness and the indiscriminate nature of his violence.