Directed by

Noel Black
Made by

20th Century Fox
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Read the complete plot summary and ending explained for Pretty Poison (1968). From turning points to emotional moments, uncover what really happened and why it matters.
Dennis Pitt [Anthony Perkins] is a disturbed young man on parole from a mental institution who becomes attracted to Sue Ann Stepanek [Tuesday Weld]. He tells her he is a secret agent, and takes her along on a series of missions. What starts as a seductive fantasy quickly spirals into real danger when he convinces her to participate in a sabotage plot against a factory, allegedly ordered by the CIA.
When the pair confronts the factory’s night watchman, Sue Ann knocks him unconscious and drowns him. Dennis is wracked with guilt over what they’ve done and what they’ve allowed to happen, while Sue Ann is exhilarated by the adventure and urges Dennis to run away with her to Mexico.
Back at Sue Ann’s home, they are interrupted by Mrs. Stepanek [Beverly Garland], the disapproving mother who stands in their way. Sue Ann realizes that Dennis is incapable of actually killing a person, so she shoots her mother and orders Dennis to dispose of the body. But he calls the police instead.
Dennis accepts the blame for the crimes, knowing the police will take Sue Ann’s word over his. He makes no effort to defend himself in court and is sentenced to a life sentence. He is glad to be locked away, a distance from Sue Ann, whom he has begun to fear. He asks his skeptical parole officer Morton Azenauer [John Randolph] to “see what Sue Ann is up to” in hopes she will be exposed. The film ends with Sue Ann meeting a young man and lamenting that the people who took her in after her mother’s death won’t let her stay out late; it is implied she will use and destroy him as she did Dennis. But Dennis’s parole officer is indeed watching as she departs with her latest victim.
Follow the complete movie timeline of Pretty Poison (1968) with every major event in chronological order. Great for understanding complex plots and story progression.
Dennis is released on parole and meets Sue Ann
Dennis Pitt, a disturbed man recently released from a mental institution, begins a troubling fixation on teenage Sue Ann Stepanek. He struggles to keep his life on track while drawn to her; Sue Ann, in turn, is intrigued by him. Their first encounter marks the start of a dangerous, symbiotic bond.
Dennis reveals he is a secret agent and drags Sue Ann into missions
Dennis tells Sue Ann that he is a secret agent and invites her to join his improvised 'missions.' He treats the lies as a way to bond and thrill-seek, blurring the line between fantasy and reality. Sue Ann eagerly accepts, fueling the toxic dynamic.
They plan and begin to sabotage a factory
The couple schemes to sabotage a factory on imaginary CIA orders, immersing themselves in a reckless fantasy. They carry out their plan, showing a willingness to break the law for the sake of their connection. The act marks the descent into violent consequences.
Confrontation with the night watchman and murder
During the sabotage, they encounter the factory's night watchman. Sue Ann knocks him unconscious and drowns him, escalating the violence. Dennis is left reeling, recognizing the gravity of their actions.
Dennis feels guilt while Sue Ann revels in the adventure
Dennis is wracked with guilt over what he has done and what he has allowed to happen. He wrestles with conscience as fear and remorse creep in. Sue Ann remains excited by the 'adventure' and presses for more thrills.
Sue Ann and Dennis plan to flee to Mexico
Sue Ann grows determined to escape with Dennis to Mexico, seeing their alleged 'missions' as a way to start anew. Dennis fluctuates between fear and fascination but becomes complicit in the plan. The idea of leaving town further cements their bond in delusion.
They return to Sue Ann's home to get clothes; encounter mother
The couple travels to Sue Ann's home to collect clothes and execute their plan. They are interrupted by Mrs. Stepanek's unexpected arrival, creating a tense confrontation. The moment raises the stakes for both of them.
Sue Ann shoots her mother; Dennis calls the police instead of disposing
In a brutal turn, Sue Ann shoots her mother to remove an obstacle in their escape. Dennis is ordered to dispose of the body, but he chooses to call the police instead, signaling a break with Sue Ann’s control. The act sets the stage for their downfall.
Dennis takes the blame and goes to prison
Dennis refuses to defend himself in court, taking full responsibility to shield Sue Ann. He is sentenced to life in prison, a consequence he accepts in part to distance himself from her. The verdict marks the collapse of their relationship and his withdrawal from her influence.
Sue Ann betrays him and remains free
Sue Ann betrays Dennis, allowing him to take the fall while she continues with her life relatively unscathed. The betrayal solidifies the power imbalance in their relationship and reinforces her pattern of manipulation. She moves on, undeterred by the consequences faced by Dennis.
Parole officer Azenauer is skeptical and asked to investigate
Dennis asks his skeptical parole officer Azenauer to 'see what Sue Ann is up to' rather than reveal the full truth. He hopes the officer will expose her behavior, while remaining quiet himself. Azenauer remains cautious but curious about Sue Ann's real nature.
Ending: Sue Ann pursues a new victim while being watched
In the final scene, Sue Ann meets a young man and laments that those who took her in after her mother's death won't let her stay out late. It is implied she will manipulate him just as she did Dennis. Dennis's parole officer is watching as she departs with her latest target, signaling ongoing danger.
Explore all characters from Pretty Poison (1968). Get detailed profiles with their roles, arcs, and key relationships explained.
Dennis Pitt (Anthony Perkins)
A disturbed young man on parole from a mental institution whose fragility makes him susceptible to Sue Ann's manipulation. He vacillates between guilt and fear, unwilling to defend himself against her schemes. He ultimately chooses self-preservation by accepting punishment to distance himself from Sue Ann.
Sue Ann Stepanek (Tuesday Weld)
A disturbed teenager whose craving for danger and novelty drives her to recruit Dennis into escalating crimes. She treats the 'adventure' as empowerment, and she shoots her own mother when pressed by consequences. Her charisma masks a ruthless indifference to others, revealing a predatory streak.
Mrs. Stepanek (Beverly Garland)
Sue Ann's disapproving mother who becomes entangled in her daughter's dangerous world. Her arrival interrupts the couple's escape and leads to a fatal confrontation. She embodies the domestic anchor that is violated by a threat from within.
Morton Azenauer (John Randolph)
Parole officer who approaches Dennis with skepticism, seeking to verify Sue Ann's story. He represents institutional authority and provides a counterbalance to Dennis's credulity. He remains watchful, hoping to prevent further harm while unsure of who can be trusted.
Learn where and when Pretty Poison (1968) takes place. Explore the film’s settings, era, and how they shape the narrative.
Time period
Late 1960s
The film unfolds in the late 1960s, a period of social change and skepticism toward institutions. The era's sense of rebellious energy and blurred morality informs the characters' impulsive actions and fragile trust. Parole, mental health care, and law enforcement are portrayed through tense, uncertain lenses that reflect the era’s doubts about authority.
Location
American suburb, Industrial district
Set in an American suburb with a nearby industrial district, the town provides a quiet backdrop that belies the danger simmering beneath. The Stepaneks' home sits at the center of the plot, while the factory's perimeter represents a forbidden, nocturnal space of 'missions' and violence. The contrast between domestic normalcy and outside threat creates a claustrophobic atmosphere that drives the story. Nighttime scenes in the factory and the police stations underscore how ordinary places can harbor dark impulses.
Discover the main themes in Pretty Poison (1968). Analyze the deeper meanings, emotional layers, and social commentary behind the film.
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Obsession
A fixation grows between Dennis and Sue Ann, pulling them into a web of pretend missions and escalating danger. Dennis's vulnerability and need for acceptance make him susceptible to manipulation. Sue Ann's thrill-seeking fixation turns affection into control, driving them toward crime and ruin.
🎭
Deception
Sue Ann fabricates an identity of daring secret agents to lure Dennis into escalating danger. The couple's lies blur lines between fantasy and reality, legitimizing reckless acts. The audience watches trusted surfaces crumble as truth becomes hard to distinguish from performance.
⚖️
Consequences
Dennis takes the blame to shield Sue Ann, exposing the unfairness and fragility of accountability. The crime strains the parole system and reveals how vulnerable individuals are exploited. The ending implies a cycle of predation that may continue with another victim.

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Discover the spoiler-free summary of Pretty Poison (1968). Get a concise overview without any spoilers.
In a world where the ordinary veneer of suburban life masks a restless undercurrent, the film dwells in a tense, almost dream‑like noir that glitters with both allure and unease. The atmosphere is thick with the scent of hidden aspirations and whispered promises, inviting the audience to wonder what lies beneath the polite smiles and tidy lawns. Light and shadow play across every scene, hinting at a reality that can shift in an instant when imagination overtakes restraint.
Dennis Pitt arrives on the fringes of that quiet world, a young man recently released from a mental institution and navigating the fragile balance between freedom and the lingering echo of his past. He is haunted by a need to belong, yet his restless mind spins stories that blur the line between truth and fantasy. Across the same street, Sue Ann Stepanek appears as the picture of conventional charm—a seemingly nice girl whose life has been neatly ordered until she meets Dennis.
From their first encounter, a magnetic pull develops, rooted in Dennis’s elaborate tales of secret missions and covert agendas. He offers Sue Ann a glimpse of a world far removed from the predictable rhythm of her days, coaxing her into a partnership that feels part game, part awakening. Their chemistry crackles with curiosity, each drawn to the other’s contrasting desires: his craving for validation through danger, her yearning for excitement beyond her modest existence.
As their intertwined fantasies deepen, the tone shifts from playful intrigue to a more unsettling suspense, suggesting that stepping beyond the familiar can have reverberating consequences. The film lingers on the fragile edge where imagination meets reality, leaving viewers poised to watch how two ordinary lives can be transformed when the lure of the extraordinary becomes impossible to ignore.
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