Rose Harsent, victim of the Peasenhall murder Despite various theories, the case remains unsolved. Her 25-year-old sister, Mary Schippan, was prosecuted for the crime, but subsequently acquitted. Parts of a body were found on 15 March 1900 and 15 April 1900. Goebel remains the only state governor in the United States to die by assassination while in office. The next day the dying Goebel was sworn in and, despite the best efforts of eighteen physicians attending him, died on the afternoon of 3 February 1900.

This list of unsolved murders includes notable cases where victims have been murdered under unknown circumstances.