Cyanide Mallika: India's First Convicted Female Serial Killer
- Jun 3
- 5 min read
When women began turning up dead on the outskirts of Bangalore, investigators did what investigators usually do: they started looking for a dangerous man. The assumption felt obvious. It was also completely wrong. The person luring these women to their deaths was a woman who presented herself as one of the most devout people they would ever meet.
Her name was K.D. Kempamma, and the press would come to call her Cyanide Mallika. She holds a grim place in the country's criminal history as India's first woman convicted as a serial killer, a fact that forced the public to confront an assumption it had never even examined: that this kind of patient, repeated killing was something only men did.
The mask of piety
Kempamma's power lay not in force but in performance. She built the role of a deeply pious woman, someone steeped in ritual and prayer, and used it to move comfortably in the world of temples and the worshippers who gathered there. In a setting defined by faith and trust, she found both her cover and her victims.
It was a near-perfect disguise. A devout older woman at a temple is among the least threatening figures imaginable, someone other worshippers instinctively trust. Kempamma understood this and inhabited the role completely, letting the assumptions of those around her do the work that intimidation or force never could.
Her targets were women in distress, often dealing with personal, marital or financial troubles, the kind of worries that lead people to seek divine help. Kempamma offered exactly that: a special prayer, a ritual, a way out of their problems. To a woman at the end of her options, she looked less like a threat than like an answer, perhaps the only one left.
How the trap closed
The method was chillingly methodical, refined through repetition. After gaining a woman's trust over time, Kempamma would instruct her to perform a special puja, a ritual of worship. She told her victims to wear all of their gold jewellery for the occasion and to meet at a temple or a secluded spot. The instructions seemed devotional; they were in fact careful preparation for robbery and murder.
At the chosen place, away from witnesses, she would have her victim consume food or holy water that she had laced with cyanide. The poison killed quickly. Kempamma would then strip the body of its jewellery and disappear, leaving behind a death that, at first glance, could be mistaken for sudden illness or misfortune rather than murder.
The genius of the scheme, if such a word can be used, lay in how each element reinforced the others. The religious framing explained why the woman should come alone to an isolated place. The instruction to wear gold ensured the payoff. And the holy water made the fatal act feel, to the victim, like a blessing rather than a threat. Every step was disguised as devotion.
Six deaths, and likely more
Kempamma was convicted of killing six women over a span of roughly eight years, between 1999 and 2007. Reports at the time suggested the real toll may have been higher, but it was these cases that the courts established beyond doubt. For her crimes she was sentenced to death, the first such sentence handed to a woman in Karnataka.
The repetition is part of what defines her as a serial killer rather than a one-time poisoner: the same disguise, the same lure, the same ritual, the same poison, refined and reused across years. She had found a method that worked and returned to it again and again, until the accumulating pattern of missing women and unexplained deaths finally pointed back to her.
Her earlier life reportedly included other crimes and brushes with the law, but it was the systematic poisoning of vulnerable women that fixed her name in Indian criminal history. The nickname Cyanide Mallika captured the essence of it: a soft, familiar name fused with the cold chemistry of her weapon.
Why the case unsettled a country
Kempamma's case landed so hard because it broke a deep, unspoken assumption: that serial killers are men, and that women, especially women who appear gentle and religious, are to be trusted rather than feared. By inhabiting the role of the harmless, devout elder, she weaponised a stereotype that worked entirely in her favour, turning society's own expectations into camouflage.
It also exposed how trust itself can be turned into a weapon. The temple, a place people enter precisely to feel safe and hopeful, became the stage for the crime. The same faith that drew her victims in was the instrument she used to disarm them. There is a particular cruelty in a killer who exploits not greed or lust, but the simple human reach for comfort and hope.
There is a social dimension too. Her victims were women under pressure, burdened by problems they felt they could not solve through ordinary means. That desperation, often rooted in real social and financial hardship, was what made them reachable. Kempamma did not create their vulnerability, but she preyed on it with precision.
For students of true crime, that is the enduring lesson. The most effective predators rarely look the part. They succeed by exploiting the assumptions a society makes about who is dangerous and who is not, and Cyanide Mallika exploited those assumptions, about gender, about age, about piety, with devastating and patient precision.
Frequently Asked Questions
Who was Cyanide Mallika?
Cyanide Mallika was the nickname of K.D. Kempamma, an Indian woman who became the country's first woman convicted as a serial killer. She poisoned women she lured through the promise of religious rituals, then stole their jewellery.
How did she kill her victims?
She befriended women in distress, promised to solve their problems through a special prayer, and told them to wear their gold and meet her in a secluded place. There she gave them food or 'holy water' laced with cyanide, then took their jewellery after they died.
How many people did she kill?
She was convicted of murdering six women between 1999 and 2007. Some reports suggested the actual number may have been higher, but six murders were established in court.
Why is her case historically significant?
She is recorded as India's first woman convicted as a serial killer, and received the first death sentence handed to a woman in Karnataka. Her case challenged the assumption that serial killers are always men and showed how religious trust can be exploited.
Sources: Karnataka court judgments and contemporary press reports. Some accounts suggest additional victims beyond the six murders for which she was convicted.
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