In 1832, fifty-seven Irish immigrants hired to lay track for the Philadelphia and Columbia Railroad died within weeks of arriving in Pennsylvania, officially from cholera, and were buried in a mass grave that locals came to call Duffy's Cut. This film follows the investigation into what actually happened there, tracing how a rail crew's disappearance was covered up for generations and how researchers eventually reopened the site to examine the bones themselves. Interviews and site visits lay out the physical evidence: skulls showing blunt trauma and bullet damage inconsistent with disease alone, suggesting some of the men were killed rather than simply succumbing to illness. The film weighs the cholera explanation railroad officials gave at the time against the violence the remains suggest, tied to the anti-Irish, anti-Catholic prejudice of the era. It follows the slow process of identifying victims, tracking down descendants in Ireland, and pushing for a proper reburial, turning a forgotten railroad-camp death into a case of buried, possibly deliberate, violence against immigrant laborers.