Regarding Oscar Slater:

From : http://www.crimefiction.com/slater.htm On the 21st. December 1908, an 82-year-old woman, Miss Marion Gilchrist, was battered to death in her Glasgow apartment by an apparently unknown assailant. It was discovered by the police that a small diamond brooch (only part of her large collection of jewellery) was missing. Her servant, Helen Lambie, was out for ten minutes buying a newspaper. The family in the apartment below, the Adams, heard noises and Mr. Adams went to investigate. Both he and Lambie were passed by a man who was just leaving the Gilchrist apartment. They entered and found the body lying by the fireplace with the head smashed-in.

(He never done it, by the way)...

Cheers

Steven