In December 1864, A. C. Richards became Major and Superintendent, a post he would hold through the next 14 years. Richards was present at Ford's Theater the night the President Lincoln was assassinated by John Wilkes Booth. In one of the lowest points of the MPD's history, the police officer who was to guard Lincoln that night, John Frederick Parker, had left his post at the door to Lincoln's box, presumably to get a drink at the bar across the street. Officer Crook, who had been on duty that day and had been relieved by Parker who was several hours late for his shift, would place blame in his book on Parker for Lincoln's death.