Professor David Richardson was cataloging a collection of vintage photographs at the Boston Historical Archive when one image stopped him cold. The 1904 studio portrait showed a young girl, roughly 12 or 13 years old, seated in an ornate Victorian chair. She wore a pristine white dress with delicate lace trim, her dark hair arranged in elaborate ringlets. Her expression was serene, almost angelic.
The photograph had arrived that morning from the Peton estate sale. The inscription on the back read: “Adelaide Peton, age 12, October 15th, 1904. Our precious angel.” The family had made their fortune in textile manufacturing and lived in a mansion on Beacon Hill.
As Richardson began cataloging the image, something about the girl’s positioning nagged at him. Her hands rested in her lap in a way that seemed slightly unnatural. Most children in formal portraits from this era looked stiff and uncomfortable, struggling to hold still for long exposures. Adelaide appeared completely at ease, as if sitting perfectly still for extended periods was natural to her.
Using his professional magnifying glass, Richardson examined the girl’s hands more closely. She wore white cotton gloves, appropriate for a young lady of her social standing. But while the right glove appeared smooth and properly fitted, the left glove seemed to have an unusual bulkiness around the palm and fingers, as if something beneath was causing the fabric to strain.
Under high-resolution photography and magnification, Richardson noticed faint discoloration near the wrist of the left glove. The staining pattern was irregular and appeared to have been present when the photograph was taken, rather than resulting from age or deterioration. Using forensic software designed for photograph analysis, Richardson enhanced the contrast of the stained areas. The pattern was consistent with blood staining that had been partially cleaned, leaving residual marks against the white fabric.
The bulkiness in the glove suggested bandaging underneath, indicating Adelaide had sustained injuries to her hand that she was concealing during the photo session.
Richardson’s research into the Peton family revealed a disturbing pattern of deaths surrounding the household. Three weeks before the photograph was taken, the family’s governess, Miss Katherine Walsh, had died after falling down the stairs in the Peton mansion. The newspaper reported it as a tragic accident.
In November 1904, a neighbor’s dog was found dead in the Peton garden under mysterious circumstances. In December 1904, a young servant named Thomas, who worked in the Peton stables, was found drowned in the Charles River.
Richardson discovered letters Katherine Walsh had written to her sister in the weeks before her death. In a letter dated September 10th, 1904, she described Adelaide as “willful and difficult to manage” and noted behaviors she found concerning. By September 18th, Walsh described an incident where Adelaide deliberately broke her mother’s favorite vase and calmly blamed a maid. When Walsh confronted her about lying, the girl looked at her “with such coldness that I felt genuinely frightened.”
In her final letter, dated September 22nd, Walsh expressed her intention to resign. “Adelaide has threatened me in ways that I dare not put into writing, and I fear for my safety if I continue to oppose her will.” She died two days later.
The photograph had been taken exactly three weeks after Walsh’s death. Richardson cross-referenced the dates and realized Adelaide would have had just enough time for minor injuries to begin healing while still requiring concealment.
Further research revealed a pattern extending back years. When Adelaide was 8 years old, a previous governess, Miss Emily Richardson, had left her position abruptly after what the family described as a misunderstanding. A letter she wrote to her employment agency described Adelaide torturing insects and small animals, displaying an alarming lack of empathy and an apparent enjoyment of others’ suffering.
Society mothers had quietly stopped bringing their children to Peton parties after incidents where Adelaide had “accidentally” hurt other children during games. The deaths of the neighbor’s dog and the servant Thomas fit into this pattern of escalating violence.
The Peton parents appeared either willfully blind or actively complicit in covering up their daughter’s behavior. Mrs. Peton’s diary contained entries suggesting she was aware of Adelaide’s true nature but determined to conceal it from society. After Walsh’s death, she wrote: “The girl’s governess was unsuitable and had to be replaced. Adelaide is happier now that she has more freedom to express herself.”
The portrait itself had been deliberately commissioned to create an image of Adelaide as an innocent, well-adjusted child. The white dress symbolized purity. The elaborate studio setting suggested wealth and respectability. But Adelaide’s insistence on wearing gloves, despite the fact that most children’s portraits of the era showed bare hands, suggested she was actively concealing evidence.
The photographer’s notes from the session provided chilling insight. “Subject displayed unusual composure and control for a child,” he wrote. “Insisted on wearing gloves despite recommendation that children’s hands photograph better when uncovered.”
In a personal journal, the photographer wrote: “The Peton child unnerved me greatly. While she maintained perfect stillness during the lengthy exposures, I had the distinct impression that she was studying me throughout the session, as if evaluating whether I posed any threat to her or her family.”
Adelaide had also shown unusual interest in the photographic process, asking detailed questions about whether photographic plates could record information that might not be apparent in the moment. She was worried about what the photograph might reveal.
Richardson’s investigation culminated when he discovered Katherine Walsh’s personal effects, including a diary she had kept during her employment. Her final entries painted a terrifying picture of a child who had learned to manipulate adults while concealing a capacity for calculated violence.
“Adelaide has become increasingly bold in her threats,” Walsh wrote days before her death. “She told me today that people who interfere with her plans tend to have accidents, and she said it with such cold certainty that I believe she meant it literally.”
Her final entry, written the night before her death, read: “Adelaide informed me today that she knows I plan to leave and that she cannot allow me to spread lies about her behavior. She said that tomorrow night when everyone is asleep, she and I will have a conversation about my future.”
The enhanced analysis of the portrait told the complete story. The blood on Adelaide’s gloves was Katherine Walsh’s blood, transferred during their final confrontation on the stairs. The injuries concealed beneath the glove had occurred when Adelaide pushed or struck her governess, causing the fatal fall.
The photograph, intended to proclaim Adelaide’s innocence to Boston society, had instead preserved evidence of her guilt for more than a century.
Richardson contacted Detective Raymond Kelly from the Boston Police Department’s cold case unit. While prosecution was impossible after 120 years, the case became an example of how modern forensic photography could solve historical mysteries.
The Boston Historical Society organized an exhibition titled “Hidden in Plain Sight: Crime and Photography in Early America,” with Adelaide’s portrait as the centerpiece. Katherine Walsh’s great-niece, Patricia, traveled from New York to see the evidence.
“Our family never accepted the official explanation for Catherine’s death,” she told reporters. “She was young, healthy, and careful, not someone who would simply fall downstairs in the middle of the night. But in 1904, a governess’s life wasn’t valued the same way as a wealthy family’s reputation.”
Richardson’s research revealed that Adelaide lived to age 86, dying in 1978 after a life that included two marriages and several mysterious deaths of family members and associates. Her pattern of violence had continued throughout her adult life, always carefully concealed and explained away as accidents or natural causes.
The 1904 portrait now hangs in the Boston Historical Society with a comprehensive placard explaining its significance. Visitors often stand before it in silence, studying Adelaide’s calculated expression and understanding that they are looking into the eyes of a child who had already committed murder and would continue killing for the rest of her life.