Monster: The Lizzie Borden Story Cast, True Story and Fact vs Fiction

Monster: The Lizzie Borden Story is the fourth installment of Netflix’s Monster anthology, released on September 17, 2026. Ella Beatty plays Lizzie Borden, who was tried and acquitted for the 1892 murders of her father Andrew and stepmother Abby in Fall River, Massachusetts. The series uses that real case as its foundation, but it also invents relationships, motives, timelines, and violent events. It should be watched as historical drama, not as a definitive account of who committed the murders.

What is Monster: The Lizzie Borden Story about?

The season reimagines Lizzie as a young woman trapped inside a wealthy but emotionally brutal New England household. Her father Andrew is domineering, her stepmother Abby is resentful, and the arrival of Bridget “Maggie” Sullivan creates an intimate alliance that the show uses to push Lizzie toward rebellion and violence.

From there, the season moves through the murders, investigation, trial, and the long cultural afterlife of the case. It is not satisfied with reproducing the courtroom record. The show links Lizzie to broader ideas about female rage, repression, celebrity, and the way violent stories become myths. That thematic ambition is also where many of its biggest departures from history occur.

The real Lizzie Borden case in brief

On August 4, 1892, Andrew Borden and his wife Abby were killed in the Borden home in Fall River. Lizzie, Andrew’s daughter, became the main suspect and was arrested. Her 1893 trial drew enormous press attention. The prosecution faced major evidentiary problems, and Lizzie was acquitted by the jury.

The acquittal is an essential fact because the murders were never legally proven to have been committed by Lizzie. Popular culture has often treated the famous rhyme and decades of speculation as if they were a verdict. They were not. Any retelling that presents a specific murderer or motive is moving beyond what a court established.

Fact vs fiction: Bridget Sullivan and Lizzie

The series gives Lizzie and Bridget Sullivan a romantic and murderous partnership. Historical evidence does not establish that relationship. Bridget was the Borden family’s live-in maid and was in the house around the time of the murders, but the sexual relationship and joint murder plot are dramatized inventions rather than documented facts.

That choice changes the engine of the story. Instead of keeping the central mystery unresolved, the show uses intimacy, secrecy, and oppression to construct a motive. It may be dramatically coherent, but viewers should not mistake that coherence for proof.

Fact vs fiction: Nance O’Neil

Jessica Barden plays actress Nance O’Neil, whose relationship with Lizzie becomes important in the series. Lizzie and O’Neil really did know each other, but their friendship began years after the 1893 trial. Reporting on the historical timeline places their connection around 1904, more than a decade after the murders.

The series moves O’Neil into earlier parts of Lizzie’s story, creating dramatic intersections that did not occur in the historical record. This is one of the clearest examples of the show rearranging chronology to build a more unified narrative.

Fact vs fiction: the Borden family

Andrew and Abby Borden were real victims, and Emma Borden was Lizzie’s older sister. The show heightens household cruelty and assigns specific private behavior to family members that cannot be known with certainty. It also imagines psychological explanations for Lizzie that go far beyond surviving records.

Emma and Lizzie did later become estranged, but that happened years after the trial. Historical accounts connect the split to Lizzie’s lifestyle and social circle, including her friendship with O’Neil, rather than to the immediate post-murder confrontations invented for television.

Why Aileen Wuornos appears in the season

Sarah Paulson appears as Aileen Wuornos, a real serial killer from a completely different era. There was no documented personal connection between Wuornos and Lizzie Borden. The series uses Wuornos as part of its larger argument about how stories of violent women echo through American culture.

That makes the sequence thematic rather than biographical. It is intended to connect two infamous names separated by roughly a century, not to reveal a hidden historical relationship.

How to watch the series responsibly

The strongest way to approach Monster: The Lizzie Borden Story is to separate three layers: documented facts, disputed historical interpretation, and the series’ inventions. The murders and trial are documented. Lizzie’s guilt remains historically disputed because she was acquitted and no alternative perpetrator was legally established. Many intimate scenes, motives, and connections in the show belong to the third category.

That distinction does not make the drama invalid. Historical fiction can explore emotions that documents cannot capture. It simply means the show should prompt further reading rather than close the case.

Cast and character guide

Ella Beatty as Lizzie Borden

Beatty plays the accused daughter at the center of the season, presenting the show’s interpretation of repression, anger, and reinvention. The performance helps define the tone of the story without reducing the character to a simple plot device.

Vicky Krieps as Bridget “Maggie” Sullivan / Elizabeth Báthory

Krieps plays the Borden maid and also appears as Elizabeth Báthory in fantasy material, emphasizing the season’s broader mythology of female violence. The performance helps define the tone of the story without reducing the character to a simple plot device.

Charlie Hunnam as Andrew Borden

Hunnam plays Lizzie’s father, whose household authority is central to the series’ imagined psychological motive. The performance helps define the tone of the story without reducing the character to a simple plot device.

Rebecca Hall as Abby Borden

Hall plays Lizzie’s stepmother, whose hostility toward Lizzie is amplified as a major source of conflict. The performance helps define the tone of the story without reducing the character to a simple plot device.

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