Compare the story "the speckled Band" by Sir Arthur Conan Doyle with "Lamb to the slaughter" By Roald Dahl.
Written in the 19th century detective stories usually have detectives in. They also have suspects, and victims and sometimes you have sidekicks who are not as clever as the main detective.
In Conan Doyle's story there are some long and difficult words such as 'merely', 'commonplace', and 'retorted'. The first sentence has 77 words in it, the
showed first 75 words of 343 total
showed last 75 words of 343 total
Mary Maloney used a frozen leg of lamb. Dr Roylott is a male but Mary Maloney is a female. We suspect Dr Roylott at the start because if his daughters got married he would lose their money.
When we don't know who killed the victim its more exciting because we want to find out the clues and we pick our own suspects and then we find out at the end who the killer really was