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‘Monster’ Season 4: Release Date, Cast, Story and the First Female Lead

Netflix’s Monster Season 4 is Monster: The Lizzie Borden Story, starring Ella Beatty as the anthology’s first female Monster. Here are the September 17, 2026 release date, historical case, cast, premise, franchise context, and a recommended Lizzie Borden trial book.
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Monster Season 4 is officially titled Monster: The Lizzie Borden Story and premieres on Netflix on September 17, 2026. Ella Beatty plays Lizzie Borden, making the installment the anthology’s first season centered on a female Monster. The story revisits the 1892 Borden murders, Lizzie’s trial and acquittal, and the legend that followed.

Netflix’s fourth installment moves from convicted or accused male killers toward a contested historical case involving a wealthy New England household, a young woman, and an unresolved public fascination. The confirmed premise, cast, historical timeline, and limits of what Netflix has announced are below.

Key takeaways

  • Monster: The Lizzie Borden Story premieres on Netflix on September 17, 2026.
  • Ella Beatty plays Lizzie Borden, the anthology’s first female lead described by Netflix as its first female “Monster.”
  • The season dramatizes the August 4, 1892 murders of Andrew and Abby Borden in Fall River, Massachusetts.
  • Lizzie Borden was arrested and tried for the murders but was acquitted on June 20, 1893.
  • The confirmed cast includes Vicky Krieps, Charlie Hunnam, Rebecca Hall, Billie Lourd, and Jessica Barden.

When does Monster Season 4 come out?

Monster Season 4, officially titled Monster: The Lizzie Borden Story, premieres on Netflix on September 17, 2026. Netflix announced the title, release date, premise, and principal cast on August 11, 2026, so those are the current confirmed details; Netflix has not yet provided an episode count or episode titles in the cited announcement.

Netflix’s official Tudum announcement identifies Ella Beatty as the season’s lead and describes the installment as the anthology’s first season centered on a female Monster.

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What is Monster: The Lizzie Borden Story about?

Monster: The Lizzie Borden Story follows Lizzie Borden and her household before and after the 1892 murders of her father, Andrew Borden, and stepmother, Abby Borden. Netflix’s official premise places Lizzie alongside Bridget Sullivan, the Bordens’ live-in maid, in a household defined by humiliation, cruelty, repression, sex, power, and revenge.

Netflix’s synopsis says: “When the repressed daughter of a wealthy New England family and her rebellious maid find themselves trapped in a house built on humiliation and cruelty, they escape into a fantasy of sex, power, and revenge.” Netflix then frames the murders as the event that creates an icon who refuses to remain imprisoned and forges her own legend.

That language suggests a stylized psychological interpretation rather than a strictly procedural reconstruction of the evidence. The season is expected to explore how a restrictive household, an unresolved criminal case, and public fascination transformed Lizzie Borden into an enduring American legend. Netflix’s description of the installment as the anthology’s “fourth and wildest” season is promotional wording, not an independent assessment.

Who was Lizzie Borden, and was she found guilty?

Lizzie Borden was accused of killing her father and stepmother in their Fall River home, but she was not legally established as the murderer: Lizzie Borden was arrested, prosecuted, found not guilty, and acquitted. The distinction matters because the historical case remains a subject of debate and cultural myth rather than a conviction-based account.

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According to the Library of Congress historical timeline, Andrew and Abby Borden were murdered on August 4, 1892; Lizzie Borden was arrested on August 11, 1892; her trial began in New Bedford, Massachusetts, on June 5, 1893; and she was acquitted on June 20, 1893.

Date Event What it establishes
August 4, 1892 Andrew and Abby Borden were murdered in Fall River The central crime dramatized by Season 4
August 11, 1892 Lizzie Borden was arrested She was formally accused and prosecuted
June 5, 1893 Lizzie Borden’s trial began in New Bedford The case proceeded to court
June 20, 1893 Lizzie Borden was found not guilty She was acquitted, not convicted

The Library of Congress guide draws on digitized historic newspapers, while a contemporary newspaper record preserves coverage of the grand-jury indictment. Those materials provide historical context for the public case, but they do not turn the series’ dramatic interpretation into a complete account of the evidence.

Who plays Lizzie Borden in Monster Season 4?

Ella Beatty plays Lizzie Borden in Monster Season 4. Beatty’s casting makes Lizzie the anthology’s first female central Monster, and the season explicitly foregrounds female rage, repression, and the cultural construction of a notorious woman.

Beatty said: “I am so excited for viewers to experience our exploration of Lizzie Borden’s story and the questions that her life animates to this day.” She also described investigating Lizzie’s psychology and examining “an American crime that feels almost mythic in proportion.” On the season’s gender focus, Beatty said: “This season gives us our first female Monster and delves into female rage and repression which I’ve found to feel strikingly relevant.” These statements appear in Netflix Tudum’s official announcement.

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Who is in the cast of Monster Season 4?

The confirmed cast of Monster: The Lizzie Borden Story includes Ella Beatty as Lizzie Borden and Vicky Krieps as Bridget Sullivan. Charlie Hunnam plays Andrew Borden, Rebecca Hall plays Abby Borden, Billie Lourd plays Emma, and Jessica Barden plays Nance O’Neil.

Actor Character Role in the announced story
Ella Beatty Lizzie Borden Lead character and first female Monster
Vicky Krieps Bridget Sullivan Lizzie’s rebellious maid and a central figure in the premise
Charlie Hunnam Andrew Borden Lizzie’s father
Rebecca Hall Abby Borden Lizzie’s stepmother
Billie Lourd Emma Lizzie’s older sister
Jessica Barden Nance O’Neil Lizzie’s actress friend

Charlie Hunnam also returns to the Monster franchise after playing Ed Gein in Season 3. Netflix has confirmed the cast and these character descriptions, but the available announcement does not establish every relationship, motive, or event that will appear in the finished episodes.

Why is Season 4 different from earlier Monster seasons?

Season 4 shifts the anthology toward an acquitted accused woman, a family-centered crime, and the cultural afterlife of an unresolved case. Earlier installments have focused on individual accused or convicted killers, while the Borden story adds questions about legal uncertainty, gender, repression, folklore, and the way media turns a crime into a legend.

Comparison point Monster: The Lizzie Borden Story Earlier franchise context confirmed by Netflix
Central subject Lizzie Borden and the Borden household DAHMER focused on Jeffrey Dahmer; Season 3 focused on Ed Gein
Legal status Lizzie Borden was acquitted The dossier describes earlier subjects as accused or convicted killers
Primary perspective Family, household relationships, female psychology, and cultural myth Earlier seasons were more closely associated with perpetrator-centered true-crime narratives
Gender framing Netflix’s first female Monster and an exploration of female rage and repression No earlier female central Monster is identified in the supplied announcement
Cultural afterlife An unresolved case became an American legend Earlier seasons became major Netflix television events

The distinction should not be overstated: the available material does not provide a complete comparative account of every prior season. It does establish that Season 4 is being marketed around a female lead and around the transformation of a contested historical case into a cultural icon.

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How successful has the Monster anthology been?

Netflix’s own performance figures show why the Lizzie Borden season is arriving as a significant franchise installment, although earlier results cannot predict Season 4’s audience.

  • DAHMER — Monster: The Jeffrey Dahmer Story recorded 1 billion viewing hours in its first 60 days, according to Netflix in 2022.
  • The first installment reached No. 6 on Netflix’s all-time English TV Top 10 list, according to Netflix’s figures accessed in August 2026.
  • Monster: The Ed Gein Story recorded 12.2 million global views in its first three days, according to Netflix in 2025.
  • Monster: The Ed Gein Story reached No. 1 in 11 countries, according to Netflix’s 2025 reporting.
  • Monster: The Ed Gein Story received seven Primetime Emmy nominations, according to Television Academy and Netflix reporting in 2026.

These are platform-supplied figures and apply to the earlier titles named above. They establish the anthology’s commercial and awards visibility, not a forecast for Monster: The Lizzie Borden Story.

What is the best book to read about the Lizzie Borden trial?

Readers who want the documented trial behind the Netflix dramatization can continue with Cara Robertson’s The Trial of Lizzie Borden: A True Story. The book is a 400-page trade paperback published on March 10, 2020, and the publisher says Robertson draws on legal proceedings, contemporary newspaper accounts, unpublished local accounts, and letters from Lizzie Borden.

The Trial of Lizzie Borden is a historical companion for readers who want legal and contemporary context, not an official Netflix tie-in and not evidence that Netflix follows the book’s interpretation. The publisher’s bibliographic page identifies the book and its source material.

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Can you visit the real Lizzie Borden house?

The real Borden house is in Fall River, Massachusetts, at 92 Second Street. A Commonwealth of Massachusetts heritage report identifies the Greek Revival house as the site associated with the murders and as a city landmark connected with tours.

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That historical reference supports the location’s relevance to the story, but current tour schedules, admission prices, availability, and commercial partnerships require separate verification. The existence of a historic site should not be read as confirmation of every detail in the Netflix series.

What has Netflix not confirmed about Season 4?

Netflix has not confirmed an episode count, full episode titles, trailer runtime, or complete production-credit list in the cited official material. The announcement also does not establish every alleged motive, relationship, or dramatized event in the Borden household.

The safest way to understand the season is to separate the confirmed historical record from the show’s interpretation. The murders, arrest, trial, and acquittal are documented history; the psychological framing, household dynamics, and presentation of Lizzie’s legend are elements of Netflix’s dramatic adaptation.

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Frequently Asked Questions

When does Monster Season 4 come out?

Netflix’s Monster Season 4 premieres on September 17, 2026. The season is officially titled Monster: The Lizzie Borden Story.

Who plays Lizzie Borden in Monster Season 4?

Ella Beatty plays Lizzie Borden in Monster: The Lizzie Borden Story. Netflix describes the role as the anthology’s first female central Monster.

Is Monster Season 4 based on a true story?

Monster: The Lizzie Borden Story is based on the 1892 murders of Andrew and Abby Borden in Fall River, Massachusetts. Lizzie Borden was accused and tried, but she was acquitted on June 20, 1893.

Was Lizzie Borden acquitted?

Lizzie Borden was acquitted after her 1893 trial, so she was not legally found guilty of killing Andrew and Abby Borden. The Netflix season dramatizes the unresolved case and its cultural mythology.

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The Bottom Line

Monster: The Lizzie Borden Story premieres on Netflix on September 17, 2026, with Ella Beatty as Lizzie Borden—the anthology’s first female central Monster. The season is based on the 1892 Borden murders and the highly publicized trial that ended in Lizzie’s acquittal, but Netflix is presenting the case as a stylized psychological and cultural interpretation rather than a simple verdict on guilt.

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