In August of 2011, a 21-year-old art student suddenly vanished from her Ohio townhouse. Her purse, her car —even her beloved dog—were all left behind. And with no signs of struggle and no clear explanation, the case baffled investigators and shook her community. For nearly two years, her disappearance was a haunting mystery… until a discovery miles away across state lines changed everything. This is the murder of Katelyn Markham.

In August of 1973, a 22-year-old woman was beginning her graduate degree in psychology at the same Missouri university when she was brutally murdered in her apartment. Originally, police believed the crime was committed by a woman. Or, a professor she may have been seeing on campus. Now, 52 years later, even more curious potential suspects have come into play, as a whole new investigation is underway. This is the murder of Tess Hilt.

In July of 2023, a beloved elementary school teacher took a walk through her Maryland neighborhood, just as she did every evening. But this time, she never came home. Within days, her disappearance sparked a massive search effort involving local authorities and concerned volunteers alike. As the weeks wore on, eerie details surfaced, including a photograph of the murder suspect as he was disposing of her remains. This is the murder of Mariame Toure Sylla.