Troilokyo: Colonial India’s First Documented Female Serial Killer

-Oishee Bose

A Woman Made Dangerous: Crime, Gender, and Survival in Colonial Calcutta

The usual narrative point to Jack the Ripper as the world’s earliest and most infamous serial killer. A careful look at colonial records and detective memoirs shows that at least seven years before the London murders, a woman in Calcutta named Troilokyo (Troilokya) Tarini Devi carried out a string of killings and repeated frauds that terrorised parts of the city. Her story became one of the earliest documented case of planned serial killings, that too by a woman in the nineteenth century. Her account threads together personal vulnerability, criminal cunning, violent escalation, and the way a police detective fixed her life into narrative aimed to provide reading for the curious public.

Early Loss, Vulnerability and the Journey to the City

Troilokyo was born in a rural Bengal village during the mid nineteenth century. Childhood marriage placed her with a much older man, however, she became a widow soon afterwards. She saw her husband only once before his death. That early widowhood removed the social protections and household status marriage normally conferred. Lacking the security of a husband or a stable household, she became vulnerable to people who had promised to help her and turned into a victim of their plans.

A woman who presented herself as a helper and who later appears in accounts as a procurer, offered Troilokyo an escape from village shame and arranged for her to travel to Calcutta. The move represented a point of no return because the city’s scale, anonymity and markets could shelter someone with nowhere to return; those same features also created temptations and opportunities that reshaped her life.

Sonagachhi, Prosperity and Motherhood

Arriving in Calcutta, Troilokyo eventually found herself in Sonagachhi, the city’s largest red-light district. Youth and beauty brought a period of relative prosperity. She acquired jewellery, a house, and the trappings of respectability recorded in memoirs: a carriage, servants, and enough money to live beyond daily subsistence. During this phase, she adopted a boy named Hari, a choice that tied her to domestic affection and that would shape later events in a dramatic way.

The household with Hari offered Troilokyo an appearance of maternal stability amid a precarious profession. Adoption made her life more complicated and more legible to officials and neighbours, and that visibility created a vulnerability that would be exploited during later investigation.

Partnership with Kali Babu and the first turn to Organised Crime

Prosperity did not last. As clientele shifted and beauty inevitably faded with age, Troilokyo entered into a partnership with a man recorded in accounts as Kali Babu. He functioned as lover, confidant and active co-conspirator. The couple moved steadily from small frauds into more organised thefts.

Troilokyo and Kali Babu developed a signature fraud that depended on ritual prestige and on people’s reluctance to question matters of honour. They targeted villages where the claim of a Srotriya Brahmin match carried real social weight because a Srotriya man served as a ritual specialist and a guarantor of orthodoxy. The con began with careful reconnaissance. Kali Babu travelled into the countryside to find a match where a prospects of marriageable men were weak and where families might be persuaded to keep negotiations private. Privacy mattered because secrecy signalled respectability and reduced the chance of verification.

Local negotiators played their parts in the performance. Troilokyo rented a fairly large house in the city and filled the household with paid actors: women to play mother and aunt, men to play uncles, and neighbours who supplied exactly the right phrases. A young girl prepared for the role remained out of sight until the last moment. On the wedding day the visible parts of ritual were performed correctly: tilak marks were applied, sacred threads were kept in place, and brief mantras were recited with enough fluency to avoid suspicion. The groom’s family, reassured by outward signs of a Srotriya match and guided by the caste practice of reverse dowry or bride-price (unique to the Srotriya Brahmins), handed over gold and family heirlooms. The couple left under the pretext of completing post-wedding rites elsewhere. At a chosen point, the false bride and her confederates slipped away into the city’s maze of lanes. By the time doubts surfaced, the ornaments had already been broken down and sold in multiple small transactions, so the trail became almost impossible to follow. The money was used to pay the rent and the accomplices, and the leftover was kept by Troilokyo.

The staged weddings exploited a marriage economy in which the groom’s side sometimes paid a bride-price, and the invocation of Srotriya prestige worked as social proof. The scam relied on ritual correctness and on families’ embarrassment about being deceived, and that shame discouraged immediate complaints while the fraud succeeded.

In taverns and private rooms, the couple favoured a different theatre of trust. Kali Babu once distracted a man with conversation while a drink was slipped with a substance such as cigar ash to dull resistance and bring sleep. Once the victim slumped, the confederates rifled his pockets, removed rings and chains, and left him with a head full of shame and little memory of the night. Many such victims chose silence over scandal, which let the thieves operate again and again. Both scams drew on the rhythms of urban life and on brittle social codes that made people easier to deceive than they realised.

A particularly violent episode from this period involved a robbery that resulted in the murder of a jewellery shop assistant in Barabazar. Kali Babu carried out the killing and attempted to conceal the body beneath the floor of a rented house. Discovery of the crime led to Kali Babu’s arrest, conviction and execution. Troilokyo’s precise role in that killing remained difficult to prove legally, so she evaded conviction for that particular crime. The execution of her partner removed a buffer and accelerated the next phase of her criminal life.

Escalation to Serial Murders: method, victims and sites

After the loss of Kali Babu, Troilokyo’s criminal approach shifted toward direct violence against women who occupied vulnerable social positions similar to her own. She perfected a cruel method that combined ritual language, trust and secluded killing sites.

Troilokyo persuaded older sex workers, making them believe that a local holy man could multiply their jewellery if they took bath at a particular pond. The victims lacking awareness against superstitions, anxious about declining earnings and trusting the promise of miraculous help, wore all their ornaments for the ritual. Troilokyo then led them to a derelict garden or a secluded pond near Maniktala. There she drowned the women, stole their jewellery, and sold the loot.

Police memoirs and later reporting attribute at least five drownings happened in that exact pond, over a three-year span. The chosen victims were ageing women from the same precarious milieu, which made the crimes tragically intimate because she preyed on peers who trusted her as an adoptive elder sister. She could mould these women very well because she was aware of their psychology and their vulnerability (she was informed by first-hand experience).

A near-arrest, a survivor’s report and police indifference

Not every killing succeeded. In one instance a victim survived an attempted drowning and later reported the crime. Local policing infrastructure at the time could be corruptible or indifferent, and that survivor’s complaint was not pursued vigorously by a local officer whose inaction may have resulted from bribes, social prejudice, or bureaucratic inertia. Troilokyo therefore continued operating while suspicion gathered around her name.

This period of impunity hardened the sense that the city’s official apparatus lacked the tools and the inclination to close the loop on serial predation, especially where crimes involved marginalised women whose missing-person reports attracted less urgency.

The turning point: Priyanath Mukhopadhyay takes the case

The case entered a new phase when Priyanath Mukhopadhyay, a police officer, who served in the detective department of the Calcutta police, who later became known as Daroga Priyanath, began to investigate. Priyanath had developed a reputation for combining careful procedure with narrative skill, and he later published many of his cases in Darogar Daptar, a serialised set of police memoirs that mixed documentary detail with dramatic storytelling.

Priyanath reopened the scattered complaints, interviewed surviving victims and witnesses, and followed a trail of jewellery sales and pawn records. He staged tactical moves designed to test Troilokyo’s reactions and to obtain confession. One decisive manoeuvre involved the brief theatrical detention of Hari. The temporary arrest of the adopted boy aimed to unsettle Troilokyo emotionally and to prompt her to reveal hidden caches of jewellery. Psychological pressure of this sort proved decisive because Troilokyo disclosed stolen property and made incriminating statements that supported her prosecution.

Trial, Mercy Petition and Execution (1884)

With the recovered jewellery and witness testimony in hand, authorities charged Troilokyo. The trial proceeded under colonial court procedures. She submitted a mercy petition to the Lieutenant-Governor that sought clemency on the grounds of circumstance and desperation. The petition failed and the sentence was carried out: Troilokyo was hanged in 1884.

Accounts report that her final concern remained Hari, the child she had adopted. That last, human detail turned her into a figure who was not solely monstrous but complexly invested in kinship and survival.

Who was Daroga Priyanath and how did he present Troilokyo?

Priyanath Mukhopadhyay served as a police officer in Lalbazar Police station for 33 years (from 1878-1911) and he published his cases in semi-autobiographical, first person accounts in Darogar Daptar (The Inspector’s Files). His work is unusual because it blends policing detail with literary techniques. Priyanath wrote as a man of authority whose outlook combined the detective’s confidence, where evidence, observation and moral clarity would prevail.

Priyanath’s account of Troilokyo is rich in sensory detail: descriptions of rooms, carriages, the glitter of jewels, and the still surface of the pond. He constructed scenes of interrogation and confession that read like courtroom drama. He presented Troilokyo primarily as a dangerous, deceptive woman whose sexuality and cunning posed a threat to social order. The detective’s voice in the narrative invited admiration for his craft and moral reassurance that the city’s order could be restored.

Scholars caution against taking his memoirs as unvarnished truth because Priyanath wrote for readers who wanted sensation as well as information, and his narrative choices shaped how subsequent generations imagined Troilokyo.

How Contemporary Interpreters read her life

Modern writers and historians have layered new readings over the contours of Priyanath’s account. Three dominant interpretive frames appear in recent work.

One frame treats Troilokyo as a criminal biographical subject and retells her life with dramatic emphasis while often accepting Priyanath’s sequence and detail, adding archival colour. Those retellings emphasise the sensational elements without deep structural analysis.

A second frame reads her as an outcome of social structures: child marriage, widowhood, trafficking into Sonagachhi, social marginalisation, and the precarious economics available to women. The structural approach explains her choices as responses to severe constraint and limited options, not as an absence of morality but as an expression of survival logic that sometimes turned predatory.

A third frame interrogates Priyanath’s role as storyteller. Critical readers stress that Darogar Daptar shaped Troilokyo into a “femme fatale” archetype, which is used to make sense of urban danger and to reassure readers about the competence of native detectives. Those critics ask readers to treat Priyanath as a mixed source: invaluable for detail and perspective yet not free of rhetorical shaping.

Each frame helps to answer different questions and taken together, they produce a fuller, a more ambiguous portrait.

Rethinking Crime, Gender and Agency

Troilokyo Tarini Devi lived a life that a modern reader can hardly imagine without feeling both dread and a strange sympathy. She was a child made a widow and then a woman who learned to use the city’s markets and myths to survive. Her hands worked both to comfort a child and to strip a body of jewellery; her life mixed tenderness and violence in ways that make easy judgments uncomfortable.

History must hold her responsible for brutal acts because the drownings, betrayals of trust and merciless theft left real victims,  whose lives mattered and whose absence should not be smoothed away. Remembering those victims should remain central.

History must also ask how a social order that allowed child marriage, denied widows economic standing, and trafficked women into brothels helped produce someone like Troilokyo. Considering that, the context does not excuse her. It does, however, make her story legible as a product of hardship and narrowing choices.

Priyanath preserved her name and gave later writers the contours they would elaborate. The detective offered a dramatic narrative of detection and later authors rewrote that name into warnings, fascination and sympathy. The image that survives looks humanly complicated: fearful and frightening, guilty and grieving, clever and trapped.

If anything about Troilokyo’s life stays with us it should be this: human beings under severe pressure can become anything, from caregivers to perpetrators. The moral task of history is to hold all those truths at once; that task asks us to remember the harm caused, to grieve the harm suffered, and to notice the social spaces that made both possible.