Oscar Slater

On the evening of December 21st, 1908, Marion Gilchrist was left alone by her maid, who went to buy a newspaper. A few minutes later, a neighbor heard loud knocks on the ceiling. When he investigated, he met the maid on the stairwell. A man walked calmly past them, smiled, and exited the building. The two proceeded into the flat to be confronted with the horrific sight of the old lady in the final throes of death. She had been severely beaten about the head.