For sixty-two years, the people of Harlan County, Nebraska, believed a drifter had killed Margaret Eloise Rourke. The sheriff said as much a month after her body was found strangled in a cattail marsh at the edge of her family’s property along the Republican River. “We believe this was a transient crime,” he announced. Those words became the official account, effectively closing the case and ending the search.

What no one in that small county of roughly eleven thousand people could believe was that the man responsible was Dr. Clarence Webb, the physician who had delivered half the children in the county, sat at kitchen tables with worried parents at two in the morning, and driven out to farmhouses in February blizzards to check on elderly patients without charging them. Six years after Margaret’s death, Webb had eulogized her father at his funeral and shaken her mother’s hand, offering the composed condolence that she had been a lovely girl. Webb practiced medicine in Alma, Nebraska, for thirty-nine years.

He received the Nebraska Medical Association’s Distinguished Service Award in 1981. His photograph hung in the county hospital lobby until the building was demolished in 2004. He died in 1998 at seventy-eight, mourned by a community that had trusted him for nearly four decades. He was also a murderer, and it would take a bone fragment no larger than a fingertip and a graduate student’s forensic genealogy thesis to finally bring the truth to light.

Alma in 1962 was a wheat and cattle town of about thirteen hundred people, sitting just above the Kansas line where the Republican River turns east. The grain elevator was the tallest structure for twenty miles. People left their cars unlocked, and children walked to school alone. Margaret Eloise Rourke was nineteen, the eldest daughter of a farming family that had worked the same three hundred acres since 1908.

She had graduated from Alma High School near the top of her class the previous spring and was working at the county library while saving money for nursing school. She played piano at the Lutheran Church on Sunday mornings, baked her mother’s rhubarb cake recipe with a cardamom variation no one else could replicate, and had been accepted to a nursing program in Lincoln. She was leaving in September. On the evening of April 22, 1962, Margaret left the library at 5:30 as she did every weekday.

She told a co-worker she was walking home by way of the river path, a shortcut she had used for years along the southern edge of her family’s property. She was expected home by six. By 6:45, her mother had called the library twice. By eight, her father and neighboring farm families had begun searching.

Margaret’s body was found the following morning in the cattail marsh where the path dipped toward the water. She had been strangled, still wearing her library badge. The 1962 investigation was earnest but limited. Investigators interviewed everyone Margaret had spoken to in her final days, examined the library, and canvassed the river path.

They collected fibers, soil, and a partial boot impression from the mud, submitting everything to the state crime laboratory in Lincoln. The results were partial and inconclusive. The fiber analysis identified wool consistent with a dozen common garment types. The boot impression was too degraded for reliable measurement.

There was no identifiable biological evidence, or so the 1962 report concluded with the tools available. Dr. Clarence Webb was interviewed in May 1962, three weeks after the murder. He had been Margaret’s family physician since her childhood.

He was cooperative, calm, and visibly grief-stricken. He told investigators he had driven past the library around 5:15 that evening but had not seen Margaret on the path. He had gone directly to his office, seen two evening appointments, and returned home by seven. His wife confirmed the timeline.

His office nurse confirmed the appointments. He was eliminated from the investigation. The drifter theory took hold. The file was sealed and moved to storage.

The official conclusion, “transient crime, unknown perpetrator,” became the county’s accepted story for the next six decades. Margaret’s mother never believed it. She said quietly, to people she trusted, for the rest of her life, that it was someone she knew, someone she would have said yes to. She said this with a flat, patient certainty that came from knowing her community better than any investigative file.

Nobody knew what to do with that, so nobody did anything. She died in 1998, the same year Clarence Webb died, without ever having an answer. Six decades later, the Harlan County Historical Society began digitizing old county records and worked with the Nebraska State Patrol’s cold case unit to re-examine unsolved deaths. Margaret Rourke’s case was one of eleven submitted for review in 2021.

The evidence box brought out of storage contained a small sealed envelope labeled in 1962 handwriting: “vegetation samples, victim’s clothing. ” Inside, preserved by institutional habit and the dry climate of a Nebraska storage room, were plant fragments collected from Margaret’s clothing during her original examination. A forensic biologist at the University of Nebraska, working with a graduate student named Rebecca Stinson on a cold case forensics thesis, examined the fragments under modern analytical conditions. What they found was not plant material at all.

One fragment, small, irregular, no larger than a fingertip, was bone, a fragment of compact bone that did not belong to Margaret Rourke. It had been misidentified in 1962 as organic plant debris and filed accordingly. It had been sitting in that envelope for sixty-two years. DNA was extracted from the fragment and submitted to a forensic genealogy database.

The profile matched a maternal lineage that traced through four generations of public ancestry records to a family whose line led directly to a man who had practiced medicine in Alma for nearly four decades. Clarence Webb had been dead for twenty-six years, but his son lived in Kearney and his daughter in Grand Island. They had DNA. The match was confirmed in March 2024.

Investigators notified Margaret’s surviving brother, eighty-one years old and living in Lincoln. He had carried the absence of his sister across his entire adult life, through decades of annual calls to the sheriff’s office that produced nothing new. When investigators told him what they had found, he was quiet for a long time. Then he said, “My mother knew.

She always said it was someone we trusted. ”

The Nebraska State Patrol Cold Case Unit issued its formal case closure in June 2024. The statement was three paragraphs long. It named Margaret.

It named Webb. It noted that the identification had been made possible by forensic genealogy analysis of a bone fragment misidentified in 1962 and preserved in county evidence storage for six decades. Because Webb had died in 1998, no prosecution was possible. The case was officially closed.

The community of Alma, or rather its descendants, reacted with the particular layered grief that comes when something beloved is revealed to have been a lie. The doctor who had delivered their parents and grandparents, who had driven out in blizzards and received the Distinguished Service Award, had also strangled a nineteen-year-old girl on a river path, attended her father’s funeral six years later, and shaken her mother’s hand. Some older residents said they could not believe it. Some said, more quietly, that they had always felt something they could not name.

Webb’s daughter issued a statement through the family’s attorney. She said her father had been a good and loving parent, that she could not reconcile that knowledge with what the investigation had found, and that she was trying. Her brother declined to comment publicly but provided the DNA sample that confirmed his father’s identification without hesitation or conditions. In June 2024, at the request of the county historical society, Margaret Eloise Rourke’s name was placed on the wall of the Alma Public Library, where she had worked for less than a year.

Her high school graduation portrait from 1961 hangs there now. Her brother attended the ceremony and said one thing into the microphone: “She should have been a nurse. She was going to be a good one. ”

Rebecca Stinson, whose thesis work produced the analysis that broke the case open, completed her dissertation in December 2023.

The Rourke case is the centerpiece of a chapter on misidentification of biological evidence in pre-1970 cold cases. She is twenty-seven years old. She did not know Margaret Rourke’s name when she enrolled in the thesis program.

She knows it now, the way certain names become lodged in a person, attached to something they did that mattered, that they did not know would matter when they were doing it.