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Who Was Sue Marcum & What Happened to Her? 2026 Update & Background

Ryan Gill

Sue Marcum was a beloved professor at American University, known for her intellect, warmth, and commitment to her students. Her life was cut short in October 2010 in what first appeared to be a random act of violence. But what emerged in the years following her murder told a darker story—one of manipulation, betrayal, and a long fight for justice.

A Respected Academic and Mentor

Sue Ann Marcum dedicated her professional life to education. A graduate of American University, she returned to teach at its Kogod School of Business, where she specialized in accounting and taxation. Her students admired her for being approachable and passionate. She was recognized multiple times as Professor of the Year, a reflection of how deeply she impacted those around her.

Beyond the classroom, she helped establish the Sue Marcum Scholarship in 2006 to support students pursuing a master’s degree in accounting. Friends and colleagues described her as strong-willed, independent, and generous—a person who gave her time and energy freely to others. Her death shocked the university community and devastated those who knew her.

A Crime That Shook a Community

On the morning of October 25, 2010, a friend went to Marcum’s Bethesda, Maryland home after she failed to answer her phone. He found her at the bottom of her basement stairs, dead from blunt force trauma and strangulation. The scene initially suggested a burglary gone wrong—windows were disturbed, electronics appeared to be missing, and her Jeep Cherokee was gone.

Police quickly recovered the stolen vehicle, driven by 18-year-old DeAndrew Hamlin. He admitted to stealing the car but denied any involvement in the murder. No evidence placed him inside the house. As investigators examined the crime scene more closely, they began to believe the burglary was staged to hide the real motive behind the killing.

The Man Behind the Facade

Attention turned to Jorge Rueda Landeros, a charismatic Spanish tutor and yoga instructor who had grown close to Marcum over several years. He had once been her teacher, then became her friend, business associate, and eventually a romantic partner. What appeared to be a deep and trusting relationship masked a financial scheme that would ultimately ruin Marcum and, authorities say, lead to her death.

Between 2008 and 2010, Marcum had invested over $300,000 into a joint trading account with Landeros. But instead of managing the funds responsibly, Landeros was siphoning money for himself. He contributed nothing of his own but used her funds to support his lifestyle. At the same time, Marcum named him as the sole beneficiary of a $500,000 life insurance policy.

Emails recovered later revealed Marcum’s growing distress. She had mortgaged her home and was facing serious financial strain. One message to Landeros read, “I’m making myself sick trying to figure out how to pay the mortgage.” By the time of her death, she was also being pursued by the IRS for more than $15 million in taxes and penalties—likely stemming from undeclared or fraudulent transactions made in her name.

Evidence, Escape, and Evasion

Forensic evidence tied Landeros directly to the scene. His DNA was found on one of two drinking glasses and under Marcum’s fingernails. A shattered tequila bottle, believed to be the murder weapon, also carried his DNA. The timeline and evidence pointed to a struggle beginning on the main floor of the house and ending in the basement.

But before a warrant could be issued, Landeros vanished. He had already crossed into Mexico, where he began a new life under the alias “León Ferrara.” Presenting himself as a peaceful yoga teacher and poet, he lived for over a decade in Guadalajara. During that time, he sent mocking emails to U.S. authorities and remained on the FBI’s Most Wanted List.

Justice After Fifteen Years

A break came in December 2022, when someone who had seen a television documentary about the case recognized him and alerted authorities. Landeros was arrested in Mexico and extradited to the U.S. in 2023. His trial began in October 2025.

Prosecutors described him as a manipulator who exploited Marcum emotionally and financially. They argued that when she had nothing left to give, he killed her. The defense claimed there was no proof he was in Maryland at the time of the murder and blamed the crime on an unknown intruder.

After an eight-day trial and nearly eight hours of deliberation, a Montgomery County jury found Landeros guilty of second-degree murder. Though not convicted of first-degree murder, which would require proof of premeditation, he now faces up to 30 years in prison. Sentencing is set for February 6, 2026.

A Legacy That Endures

The loss of Sue Marcum left a lasting void in her family and the academic community she served. Her brother, Alan Marcum, attended every day of the trial. Though disappointed by the lesser charge, he expressed relief that the man responsible for his sister’s death would finally be held accountable.

Sue Marcum’s legacy lives on through the scholarship in her name, through the memories of the students she mentored, and through the tireless efforts of those who pursued justice on her behalf. Her story is both a tragic cautionary tale and a testament to a life lived in service to others.

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