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

Sue Ann Marcum was an accounting professor at American University in Washington, D.C., whose life was marked by a commitment to teaching, intellectual curiosity, and service to others. Known for her engaging classroom presence and wide range of interests outside the university, Marcum built a reputation among colleagues and students as someone who brought both knowledge and personality into her work.

Her life came to national attention after her killing in October 2010 in her Bethesda, Maryland home. The investigation into her death and the eventual conviction of Jorge Rueda Landeros drew renewed focus to who Marcum was as a person, teacher, and member of her community.

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A Career Dedicated To Education

Marcum spent years teaching accounting at American University’s Kogod School of Business in Washington, D.C. Colleagues described her as a professor who approached teaching with energy and creativity. She worked to make accounting accessible to students by connecting technical material with real-world examples and memorable demonstrations.

Family members later recalled that Marcum brought humor into the classroom. Her brother, Alan Marcum, spoke about how she once used a red clown nose while explaining accounting principles, referencing her earlier experience working with the Ringling Bros. and Barnum & Bailey Circus. According to those who knew her, she believed teaching should engage students beyond numbers and formulas.

A Life Filled With Interests Beyond The Classroom

Outside of her academic work, Marcum maintained an active and varied lifestyle. Friends described her as someone who enjoyed travel and spent time exploring new places. She was also involved in community service and volunteer work, activities that reflected her interest in helping others.

Marcum also devoted time to personal pursuits such as yoga and learning Spanish. Those who knew her said she embraced new experiences and maintained a wide circle of acquaintances and friendships. Her sense of curiosity and willingness to try new activities became part of how people remembered her.

Personal Relationships And Private Challenges

While Marcum’s public life as a professor and community member was well known, aspects of her private life remained less visible to those around her. Investigators later learned that some of her personal relationships involved complexities that were not widely understood by friends or colleagues.

Authorities examined her connection with Jorge Rueda Landeros, a Spanish language and yoga instructor she met in Washington, D.C. in 2005. Investigators later said the relationship included both personal and financial ties. Prosecutors stated that Marcum had entrusted Landeros with large sums of money to invest, which became a significant element in the case that followed her death.

The Loss Felt By Family And Friends

When Marcum was found dead in her Bethesda home on October 25, 2010, the news shocked those who knew her. Friends described her as generous and caring, and many struggled to understand how someone so engaged with life could become the victim of such violence.

Family members later spoke about the lasting impact of her death. Her brother described how gatherings and milestones were no longer the same without her presence. Colleagues and former students also reflected on the absence of a teacher who had devoted years to guiding others in their academic and professional paths.

Remembering Sue Marcum

Years after her death, Marcum continues to be remembered through the accounts of those who knew her personally and professionally. Students recalled a professor who made accounting meaningful, while friends spoke about her enthusiasm for travel, culture, and learning.

The legal proceedings that followed her death brought closure to the criminal case, but they also renewed attention on the life she led. For many who knew her, Sue Ann Marcum remains defined not by the circumstances of her death, but by the impact she had as a teacher, colleague, and friend.