A team of forensic archaeologists opens a case file on a skeleton pulled from the grounds of Tadcaster Castle in Yorkshire, the remains of a medieval woman buried seven centuries ago. Osteologists and pathologists work through the bones piece by piece, reading fractures, wear patterns, and burial position for clues to who she was and how she died. The investigation moves between the excavation site and the lab, with specialists comparing her skeleton against medieval records and other regional finds to place her within the social and physical world of Yorkshire in the period. Reenactments and on-site footage of the castle grounds fill in the historical setting while the experts debate competing explanations for the injuries visible on her bones. Part of the Medieval Dead series, the episode treats the skeleton as a genuine unsolved case, building its conclusions from physical evidence rather than speculation, and closes with the team's best reconstruction of the violence, or accident, that ended her life.