On June 27, 1977, a morning nurse arrived at Glensheen Mansion in Duluth, Minnesota, for her seven o’clock shift and knew immediately that something was wrong. The thirty-nine-room estate on twelve acres of Lake Superior shoreline was too quiet. Velma Pietila, the night nurse, should have been moving through the house, preparing for the shift change. Instead, the nurse found her at the bottom of the grand staircase, beaten to death with a brass candlestick.

Upstairs, Elizabeth Congdon lay in her bed, dead. The eighty-three-year-old, partially paralyzed from a stroke, had been suffocated with a satin pillow. Her bedroom had been ransacked, drawers pulled out, a jewelry box missing. The initial theory was straightforward: a robbery gone wrong, an intruder who killed the nurse and then the helpless invalid to eliminate witnesses.

But the theory collapsed under scrutiny. Nothing of real value had been taken from a house filled with art, silver, and antiques. The entry point, a billiard room window, had glass fragments on the outside, suggesting someone had staged the break-in. And the violence was extreme, prolonged, the work of someone determined.

Within hours, detectives turned their attention to the family, specifically to Elizabeth’s adopted daughter, Marjorie Congdon Caldwell. Marjorie stood to inherit more than eight million dollars when her mother died. She was broke, living in a hotel in Golden, Colorado, with her unemployed new husband, Roger Caldwell. The Congden family trustees had cut her off after years of watching her squander money.

Three months before the murders, the Colorado Bureau of Investigation had warned the trustees that Marjorie was looking for someone to kill her mother. Security had been increased at Glensheen, but Elizabeth had refused to believe her daughter capable of such a thing. To understand how a family fortune ended in murder, one has to go back to its beginning. Chester Congdon was born in 1853 to a Methodist minister.

After a struggling start as a lawyer in St. Paul, he moved to Duluth in 1892 to join a law partnership. There, he met Henry Oliver, a Pittsburgh steel magnate who had come to inspect the newly discovered Mesabi Iron Range. Oliver needed local legal representation, and Chester was in the right office at the right time.

He became the agent for the Oliver Mining Company, negotiating leases and purchasing property. When John D. Rockefeller and Andrew Carnegie fought over control of the range, and J. P.

Morgan stepped in to consolidate everything into United States Steel in 1901, Chester’s stock soared. His shares rose 555 percent in six years, making him one of the wealthiest men in Minnesota. In 1905, Chester began planning a mansion that would announce his arrival. He hired Minnesota’s most prominent architect, Clarence Johnston, who designed a Jacobean Revival estate with brick and granite, carved wood, stained glass, and terraced gardens descending toward the lake.

Construction took nearly four years and cost $854,000, the equivalent of over twenty-two million dollars today. The house was modern, with central heating, a vacuum system, and both gas and electric lighting. The family moved in on November 24, 1908. Chester named the estate Glensheen, combining a Scottish word for a narrow valley with the English village of Sheen, from which his ancestors had come.

Chester enjoyed the estate for only eight years before dying of a pulmonary embolism in 1916. His wife, Clara, lived there for another thirty-four years, preserving everything exactly as he had left it. When Clara died in 1950 at age ninety-six, the question of who would maintain the vast estate fell to their youngest daughter, Elizabeth, who had never married and never left Glensheen. Elizabeth, born in 1894, had grown up in the house.

She was the daughter who stayed, helping Clara manage the household and the social obligations of the Congden name. Alone in thirty-nine rooms after her mother’s death, she made a decision: she would adopt children. In 1932, she adopted an infant she named Marjorie, and in 1935, a second daughter, Jennifer. The house filled with sound again.

But the two girls could not have been more different. Jennifer was quiet, obedient, easy. Marjorie was temperamental, demanding, volatile. Some extended family members never fully accepted the adopted girls as real Congdons, and Marjorie seemed to feel the rejection acutely.

She acted out, spent money recklessly, and pushed boundaries relentlessly. Elizabeth indulged her, paid her debts, and made excuses for her behavior for decades. In 1951, at nineteen, Marjorie married Richard Loy and began having children, seven in total. The family lived in Marine on St.

Croix, Minnesota, in constant financial crisis. Elizabeth bailed them out again and again. In the late 1960s, the Loy house burned under suspicious circumstances, and the insurance payout raised questions that were never answered. The marriage collapsed in 1970.

Marjorie moved to Colorado in 1975, leaving most of her children behind. There she met Roger Caldwell, another divorced, struggling, financially desperate person. They married in 1976 and hatched plans for a horse ranch that failed within months. Their property was foreclosed, and they ended up living in a hotel.

By spring 1977, the Caldwells were desperate. Marjorie’s trust income of roughly twenty-two thousand dollars a year vanished instantly. The trustees refused every request for more money. In March, the Colorado Bureau of Investigation warned the trustees that Marjorie was asking around about finding someone to kill her mother.

Three days before the murders, Marjorie signed a power of attorney authorizing Roger to receive approximately two and a half million dollars of her expected inheritance directly. On the weekend of June 24 through 26, Roger disappeared from the hotel. He left a note saying he and Marjorie would be looking at real estate, but the real estate agent never saw him. He was gone for seventy-two hours with no witnesses, no credit card receipts, no airline records.

On Monday morning, Elizabeth Congdon and Velma Pietila were found dead. When Roger reappeared at the hotel Monday afternoon, he had bruises on his face and cuts on his hands. He claimed a horse had kicked him. At the funeral in Duluth three days later, relatives noticed his injuries and his nervousness.

They urged police to look closely at the couple. The investigation produced damning evidence. A coin dealer in Colorado contacted police after receiving a Byzantine gold coin for appraisal, mailed from Roger’s address, matching items from Elizabeth’s jewelry collection. A search of the hotel room found more stolen jewelry and a wicker basket matching the missing jewelry box.

Roger’s thumbprint was on the envelope containing the coin. There was no escaping the physical proof. Roger was arrested on July 6, 1977, and charged with two counts of first-degree murder. Marjorie was arrested the next day, charged with conspiracy and being an accomplice.

Roger’s trial began a year later in Brainerd, Minnesota. The prosecution presented the stolen jewelry, the fingerprint, the injuries, the motive. The defense argued Roger had been framed by other family members, but the evidence was overwhelming. The jury deliberated for three days and returned a verdict of guilty on both counts.

Roger was sentenced to two consecutive life terms. Marjorie’s trial began in April 1979 in Hastings, Minnesota. She had not been at the crime scene. The prosecution’s case was entirely circumstantial: the financial desperation, the power of attorney signed three days before the murders, the hitman rumor confirmed by law enforcement, suspicious fires, a daughter’s testimony about her mother’s capacity for violence.

But her attorney, Ron Meshbesher, was one of the best in the state. Marjorie dressed conservatively, sat at the defense table knitting, and presented herself as a grieving daughter wrongly accused. The defense argued that Roger had acted alone and that the prosecution had suspicion but no proof of Marjorie’s involvement. The jury deliberated for nine hours and returned a verdict of not guilty on all charges.

Marjorie walked free. She attended a party thrown by some of the jurors afterward. The legal saga was not over. In 1982, the Minnesota Supreme Court overturned Roger’s conviction, ruling that testimony from Marjorie’s trial about alternative suspects could have affected the jury’s verdict.

Facing the risk of a retrial, the prosecution offered a plea deal. In July 1983, Roger pleaded guilty to two counts of second-degree murder and was released for time served after five years in prison. His confession admitted exactly what the prosecution had always argued, that he entered Glensheen, beat Velma Pietila to death, suffocated Elizabeth Congdon, and took the jewelry box. But he did not implicate Marjorie.

He made it sound as if he had acted alone, a claim most observers found absurd. Roger Caldwell committed suicide in 1988 at age fifty-five. He left no note, no final confession, no explanation. Marjorie continued her pattern of destruction.

A house she shared with her third husband burned down in 1982, and she was convicted of arson and served twenty-one months. There were more charges over the years: forgery, theft, fraud. Her children remained estranged. She moved to Arizona and continued to maintain her innocence, claiming always that Roger had acted alone.

She gave occasional interviews, always portraying herself as a victim. No one believed her, but she had been acquitted, and double jeopardy protected her forever. Glensheen opened as a museum in July 1979. Initially, tour guides were instructed not to mention the murders, but visitors knew, and eventually the policy changed.

The story became part of the estate’s history. The mansion now attracts over one hundred thousand visitors a year, drawn by the architecture, the gardens, and the dark story. Ninety-five percent of what visitors see dates to 1908. The house Chester Congdon built to last for generations has endured, preserved by the University of Minnesota Duluth, protected as a National Historic Landmark.

Chester’s dream was a family dynasty filling those thirty-nine rooms for generations. It lasted one generation beyond him. Clara lived there until 1950, Elizabeth until 1977. Then the family was gone.

Elizabeth was murdered in her bed. Marjorie, who most likely orchestrated it all, received nothing. She lived on a restricted trust income of forty thousand dollars a year and ended her life in Arizona, facing fraud charges in old age. The fortune she killed for never materialized.

The house, however, survived everything. The beauty endured. Glensheen stands as a public treasure, the physical legacy secure even as the family collapsed around it.