To what extent do The Speckled Band and Lamb to the Slaughter follow the Murder Mystery Genre

Between the years 1837-1901 was, the Victorian era, this was also the time of the serial killer ‘Jack the ripper’. If you lived in London during the time of Jack the ripper, being wealthy was an advantage. The poor survived by working in factories and as common labourers, for example, brick layers, dock workers and prostitutes. Living Conditions for most, were disgusting, there was no sanitation and very poor drainage. Houses were crowded, which meant that there were usually seven or eight people sharing a room. Pubs were popular with the working class men. One pub in White Chapel, known as “Ten Bells” was thought to be a haunt of Jack the ripper. The poor sanitation led to outbreaks of diseases such as, Typhoid. Child labour was also very high, some children had to work at least 11 or 12 hours a day.
“The Speckled Band” is a pre-20th Century story and “Lamb to the Slaughter” is a 20th Century story. When “The Speckled Band” was written during the Victorian era. Th...