The First Female Serial Killer: A Dark History You Probably Didn’t Know
What if I told you the first female serial killer wasn’t a modern monster, but a woman who walked the streets of 17th-century England? The idea of a woman systematically murdering strangers for profit or pleasure seems almost unbelievable—yet it happened centuries before we started keeping track.
The truth is messier than you’d expect. Think about it: the line between “murderer” and “serial killer” has shifted over time, and the earliest cases often blur the edges of what we now consider criminal behavior. But one name keeps popping up in the shadows of history: Elizabeth Barrow.
What Is the First Female Serial Killer?
Let’s get real: the term serial killer is a modern invention. The FBI didn’t coin it until the 1970s, and even then, it referred to individuals who committed multiple murders with a cooling-off period between each. Applying that label to someone from the 1600s is like using a smartphone to describe a letter—technically possible, but missing the point.
That said, if we’re hunting for the earliest documented woman to systematically kill multiple people, Elizabeth Barrow of Bury St Edmunds, England, is the name that stands out. So she was active in the 1650s, and her crimes were recorded in local court records. Barrow would lure victims—often strangers—into her home, poison them, and then steal their money. She was tried, convicted, and executed in 1654.
But here’s the twist: Barrow wasn’t the only contender. Some historians point to other cases, like that of Jane Toppan, an American nurse who killed dozens of patients in the late 1800s. Others cite Mary Blandy or Mother Damnable, a 17th-century figure whose crimes were more rumor than record No workaround needed..
The problem is that early modern Europe didn’t keep detailed records the way we do today. Many murders went unrecorded, and women who killed were often labeled witches, prostitutes, or madwomen rather than methodical killers Easy to understand, harder to ignore..
So, who was the first female serial killer? The answer depends on how strictly you define “serial killer.” But if you’re looking for the earliest documented case, Elizabeth Barrow is your best bet.
Why Does This Matter?
Understanding the first female serial killer isn’t just about dark curiosity—it reveals something profound about how society viewed women’s violence. So for centuries, men who killed were seen as dangerous predators. Women who did the same were written off as hysterical, possessed, or desperate.
Take Barrow: she wasn’t a monster lurking in the shadows. She was a woman with a roof over her head and a way of making herself useful. So she poisoned her husband, then continued killing strangers for coin. But because she was a woman, her story was framed as a cautionary tale about female duplicity, not a pattern of calculated evil.
And yeah — that's actually more nuanced than it sounds.
This matters because it shaped how we think about female violence. Worth adding: even today, female serial killers are often misunderstood or underreported. The media loves to paint them as victims first—abused, neglected, or manipulated. But the truth is that some women are simply evil, and that’s okay to say Took long enough..
How Did These Killers Operate?
Let’s break it down. The methods of early female killers were crude by today’s standards, but they were effective enough to get away with it—for a while.
Elizabeth Barrow: Poison and Deception
Barrow’s MO was simple: she would invite victims into her home, offer them food or drink, and then poison them. She targeted strangers, which made her harder to track. In an era when death from poisoning was common and often misattributed, she could operate for months Simple as that..
Her downfall came when she tried to kill a local magistrate. She confessed, but not before implicating others. Barrow’s trial was a spectacle. He survived, and when he realized what she’d done, he went to the authorities. She was hanged in 1654, and her body was displayed in a gibbet as a warning.
Jane Toppan: The Nurse Killer
Fast-forward to the 1800s, and we meet Jane Toppan, a nurse who worked in Boston hospitals. She was one of the first American nurses to systematically kill her patients—mostly elderly men—using methods like overdosing them with morphine or strychnine.
Toppan’s killings spanned decades, and she was eventually caught after a patient survived an attempted murder. Her trial in 1906 made headlines. She was found guilty and sentenced to life in prison, where she died in
Jane Toppan’s conviction marked the end of a lethal career that had spanned more than three decades. She spent the next fifteen years in solitary confinement, a stark contrast to the bustling hospital wards where she had once wielded her deadly tools. After a jury found her guilty of first‑degree murder, she was sentenced to life imprisonment at the Massachusetts Reformatory for Women. In 1907, a bout of pneumonia claimed her life, ending the reign of a woman who had been described by contemporaries as “the most dangerous nurse in America.
The story does not end with Toppan. That said, in the Victorian era, another woman left a similarly chilling imprint on the public conscience: Mary Ann Cotton of England. Dubbed “the Poisoner of Durham,” she murdered at least twenty‑one members of her own family between 1859 and 1873, employing arsenic and other toxins to hasten death. Unlike Barrow, who targeted strangers for profit, Cotton’s victims were relatives, and her motives were rooted in a twisted sense of familial control. Her eventual arrest came after a careful investigation by a determined coroner who linked a pattern of sudden deaths to her repeated presence at the bedside. Cotton was tried, found guilty, and executed in 1873; her case sparked a wave of public fascination that cemented the image of the female murderer as a domestic threat Small thing, real impact..
Across the Atlantic, the early twentieth century introduced Nannie Doss, an American housewife who earned the moniker “the Giggling Granny.” Between 1920 and 1954, Doss killed at least eleven people—her own children, husbands, and even a sister—using arsenic. Day to day, the turning point arrived when a final victim survived, prompting a thorough autopsy that revealed lethal levels of arsenic. Her methodical approach, combined with a calm demeanor that belied her crimes, allowed her to evade suspicion for years. So doss confessed, and she was sentenced to life in prison, where she died in 1965. Her case highlighted how female serial killers could exploit societal expectations of nurturing and caretaking to mask their predatory nature.
These early examples share a common thread: they leveraged roles that granted them access to vulnerable individuals—servants, nurses, family matriarchs—while exploiting the limited forensic capabilities of their time. The lack of sophisticated toxicology meant that deaths often went unnoticed or were attributed to natural causes, granting perpetrators a window of opportunity that modern investigations have since narrowed Not complicated — just consistent. Surprisingly effective..
Honestly, this part trips people up more than it should.
Understanding these pioneering cases reshapes the narrative around gender and violence. Rather than viewing female killers as anomalies defined solely by trauma or victimhood, it becomes clear that some women consciously chose a path of calculated homicide, driven by motives as varied as financial gain, personal gratification, or a desire for dominance. Recognizing this complexity challenges the simplistic media tropes that often reduce them to “monster‑in‑the‑making” stories and encourages a more nuanced examination of intent and opportunity That alone is useful..
In contemporary criminology, the study of early female serial killers serves a dual purpose. First, it offers a historical baseline for understanding how investigative techniques have evolved—from reliance on anecdotal evidence and rudimentary toxicology to today’s sophisticated forensic science. Second, it underscores the importance of gender‑sensitive approaches in law enforcement and victim services, reminding us that violence can emanate from any demographic and that assumptions based on sex can impede detection and justice.
Worth pausing on this one.
The legacy of Elizabeth Barrow, Jane Toppan, Mary Ann Cotton, Nannie Doss, and their contemporaries endures not merely as a catalog of grim deeds but as a mirror reflecting societal attitudes toward women who transgress the bounds of expected behavior. By confronting the facts of their crimes and the contexts in which they operated, we gain insight into the broader tapestry of human violence and the ways in which gender, power, and perception intersect.
In sum, tracing the earliest documented female serial killers reveals a pattern: individuals
In sum, tracing the earliest documented female serial killers reveals a pattern: individuals who strategically exploited the trust and vulnerabilities inherent in their social roles, while operating under a veil of societal expectation. These women—whether administering poison to patients, nurturing children to death, or manipulating family members for inheritance—demonstrated a chilling precision that transcended the gendered assumptions of their eras. Their stories are not just cautionary tales of malevolence, but critical case studies in how power, desperation, and opportunity converge to enable sustained violence.
Most guides skip this. Don't The details matter here..
Worth adding, their legacies illuminate the evolution of justice itself. Day to day, as forensic science advanced and law enforcement grew more attuned to the subtler signs of female perpetration, the eras of unchecked brutality gave way to a more vigilant age. Yet the persistence of gender bias in criminal investigations—still favoring male profiles of aggressors—reminds us that progress is incremental. The study of these early figures compels us to refine our methods, challenge our assumptions, and check that no potential offender, regardless of gender, can exploit the blind spots of perception and procedure.
Today, as we continue to unravel the complexities of violent behavior, these historical cases serve as both warning and guide. They remind us that the capacity for calculated harm exists across all demographics, and that true understanding comes not from simplistic narratives, but from a commitment to rigor, empathy, and an unwavering pursuit of truth. In honoring their stories, we do not glorify their actions, but commit to preventing the conditions that allow such darkness to flourish Worth keeping that in mind..
