Dissecting Overkill: An Analysis of Jack the Ripper’s Final Act

Background/Objectives: Overkill is generally defined as violence demonstrably exceeding the force required to cause death, often involving a disproportionate number of inflicted injuries. Typically linked to specific mental states, this phenomenon can serve diverse perpetrator purposes, from expressing sadistic impulses to deliberately contaminating forensic evidence. This study re-examines the historical case of Mary Jane Kelly, the canonical final victim of Jack the Ripper, to offer a historical perspective on extreme violence and its influence on modern forensic frameworks. Methods: We employed a retrospective analysis, combining a systematic literature review with application of the Homicide Injury Scale to documented autopsy findings from 1888. Results: The autopsy revealed systematic post-mortem mutilation following a fatal neck laceration. Application of the Homicide Injury Scale confirmed violence exceeding lethal force. Conclusions: This case represents a foundational example of organized overkill behavior, demonstrating the value of applying modern forensic frameworks to historical cases to inform comprehensive overkill analysis.