5 Most Diabolical Female Serial Killers in History
In the annals of true crime, serial killers are predominantly male, but a small yet terrifying subset of women have committed atrocities that rival the worst of their counterparts. These female perpetrators often exploited societal expectations of nurturing and domesticity to mask their depravity, luring victims with false promises of care or love. While men account for over 90% of known serial killers, the women who cross into this realm tend to employ insidious methods like poison, suffocation, or brute force, preying on the vulnerable—children, the elderly, spouses, or strangers.
This list examines five of the most notorious female serial killers, ranked by the scale of their savagery, victim count, and psychological malice. Their stories, drawn from historical records and court documents, reveal patterns of manipulation, greed, and unbridled rage. We approach these cases with respect for the victims, whose lives were cut short by unimaginable betrayal, highlighting the investigative triumphs that brought these killers to justice.
From Black Widows who poisoned for profit to hands-on murderers who reveled in violence, these women shattered illusions of maternal instinct. Their legacies serve as stark reminders of evil’s ability to hide in plain sight.
5. Nannie Doss: The Giggling Granny
Early Life and Motives
Born Nancy Hazel in 1905 in Alabama, Nannie Doss endured a impoverished, abusive childhood marked by an alcoholic father and grueling farm labor. She married young at 16, entering a pattern of short-lived unions fueled by loneliness and a desire for financial security. Doss’s moniker, “Giggling Granny,” stemmed from her eerie habit of laughing during police questioning about her husbands’ deaths—a chilling disconnect that masked her arsenic-laced killings.
Her motives blended greed, insurance payouts, and frustration with inattentive partners. Over four decades, she claimed at least four husbands, two children, her mother, and others, totaling around 11 victims.
The Crimes and Investigation
Doss’s method was simple yet diabolical: she baked arsenic into food or drinks, often prussic acid from rat poison. Her fourth husband, Arnie Lanning, fell ill in 1953 after consuming her infamous prune-laced cobbler. When her fifth husband, Samuel Doss, died suspiciously in 1954, his brother alerted authorities. Exhumations revealed lethal arsenic levels across multiple bodies.
Confessing with unsettling cheer, Doss detailed her “recipe” for murder. She showed no remorse, even joking about her deeds.
Trial and Legacy
Pleaded guilty in 1955, Doss received life imprisonment, dying in 1965 from leukemia. Her case exposed the dangers of overlooked domestic deaths, influencing forensic toxicology advancements. Victims like her grandchildren, poisoned for convenience, underscore the betrayal of familial trust.
4. Dorothea Puente: The Boarding House Butcher
Background of Deception
Dorothea Montalvo Puente (1929-2018), orphaned young in California, drifted through prostitution, forgery, and petty crime. By the 1980s, she ran a Sacramento boarding house for the elderly and disabled, posing as a compassionate landlady. Her “evil” lay in exploiting welfare-dependent tenants, collecting their checks while ensuring they never cashed another.
Authorities link her to nine murders, though she likely killed more.
Killings and Discovery
Puente drugged victims with sedatives, then strangled or smothered them, burying bodies in her yard. Targets included mentally ill renters like Evila Cruz and Ruth Munroe, whose Social Security funded her lavish lifestyle—diamond jewelry, fine dining.
In 1988, a social worker’s concern led police to dig up her property, unearthing seven decomposed corpses. Puente fled but was caught dining at a restaurant, purse stuffed with sedatives.
Conviction and Impact
Her 1993 trial featured grisly photos and witness testimonies of her charm offensive. Convicted of three murders (acquitted on others due to decomposition), she got life without parole. Puente died in 2018, maintaining innocence. Her case spotlighted elder abuse vulnerabilities, prompting boarding house regulations.
3. Juana Barraza: La Mataviejitas
From Abuse to Monster
Mexico City’s “Old Lady Killer,” Juana Barraza (born 1957), was a former wrestler known as “The Lady of Silence.” Abandoned by her mother—an alcoholic who prostituted her as a child—Barraza channeled rage into serial homicide. Targeting elderly women, she symbolized matricide on a massive scale.
Confirmed victims: 11, suspected: up to 49 between 1998-2006.
Brutal Methods
Disguised as a nurse or social worker, Barraza gained entry, bludgeoning victims with phone cords, stethoscopes, or her bare hands, often strangling them post-beating. Signature: stolen purses and ID cards, plus a modus operandi of leaving bodies face-down. Victims like 82-year-old Maria de los Angeles Repper endured savage beatings.
DNA from a relative matched crime scenes in 2006, leading to her arrest after a witness saw her fleeing a murder.
Trial and Sentence
Convicted of 10 murders in 2008, Barraza received 759 years—symbolic finality. She blamed her mother during testimony, showing fleeting remorse. Her reign terrorized seniors, reshaping door-to-door safety protocols in Mexico.
2. Myra Hindley: The Moors Murderer
Partnership in Perversion
Born in 1942 in Manchester, England, Myra Hindley met lover Ian Brady in 1961. Together, they abducted, tortured, and killed five children aged 10-17 between 1963-1965. Hindley’s “evil” amplified by her role in luring victims with sweets, photographing their agony, and participating in assaults.
Her compliance with Brady’s sadism marked her as equally culpable.
The Horrific Crimes
Victims included Pauline Reade (16), strangled and stabbed; John Kilbride (12), suffocated; Lesley Ann Downey (10), whose taped pleas haunt records; Keith Bennett (12), whose body remains undiscovered; and Edward Evans (17), bludgeoned in Hindley’s home. Bodies were buried on Saddleworth Moor.
Arenas David Smith tipped police after witnessing Evans’s murder, leading to searches and confessions.
Justice and Controversy
Convicted in 1966 of three murders (later four), Hindley got life, dying in 2002. Brady suicided in 2017. Public outrage over their “normal” facades fueled child safety reforms. Victims’ families endured decades of pain, with Bennett’s mother dying unresolved.
1. Belle Gunness: The Black Widow of La Porte
Origins of Greed
Brynhild Paulsdatter Storset (1859-1938?), a Norwegian immigrant to Indiana, married twice before opening a farm in 1900. Posing as a lonely widow seeking suitors via ads, Gunness amassed $250,000 (millions today) by murdering wealthy men, plus children and servants. Estimated victims: 40+, including her own family.
Her calculated brutality—disemboweling, decapitating—earns her the top spot.
Mass Murder Farm
Gunness poisoned suitors with strychnine, bludgeoning stragglers, then dismembered and buried them in hog pens. Victims included suitor Andrew Helgelien, whose 1908 letter prompted his brother’s search, uncovering the charnel ground. A fire destroyed her house; a beheaded female corpse was assumed hers, but dental records disputed it—Gunness likely faked her death.
Over 12 bodies plus fragments of 14 more were exhumed.
Elusive End and Legacy
Never tried, Gunness vanished, possibly living as another identity. Her farm’s horrors, confirmed by coroner reports, pioneered mass disinterment techniques. Victims’ families, mostly immigrants, sought justice in vain, their trust exploited ruthlessly.
Conclusion
These five women—Nannie Doss, Dorothea Puente, Juana Barraza, Myra Hindley, and Belle Gunness—embody the rare but profound terror of female serial killers. United by betrayal of trust, their methods preyed on society’s blind spots: family, caregiving, companionship. With victim counts from dozens to potentially hundreds, their evil lay not just in numbers but in the intimate savagery that shattered lives.
Modern forensics and vigilance have curtailed such unchecked reigns, but their stories demand remembrance for victims’ sake. They remind us: monstrosity knows no gender, only opportunity and unchecked darkness.
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