Beloved professor killed, sparking worldwide manhunt | 20/20 ‘The Hunt for Mr. Right’ Part 1

By 24USA.NEWS On Jan 17, 2026

When 52-year-old American University accounting professor Sue Marcum was discovered lifeless on the backside of the steps inside her upscale Bethesda, Maryland, residence in 2010, her homicide made headlines. Medical examiners dominated her loss of life a murder brought on by blunt-force trauma and asphyxiation. DNA proof discovered beneath her fingernails signaled a doable battle with an attacker. But what initially seemed to be a housebreaking gone unsuitable quickly took a darker flip when authorities centered on a former boyfriend. John Quiñones follows the path of a world fugitive with unique interviews and unprecedented entry contained in the case within the all-new 20/20 episode “The Hunt for Mr. Right,” streaming on Disney+ and Hulu, beneath Season 48, Episode 13.

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