The 18th centaury was a time of great change. The rich were getting richer, and the poor were getting poorer. The social gap between these two classes was getting wider, which caused much conflict and as these people were living side by side. This effect was magnified between these two extremely different social classes, causing a time of great unrest and therefore caused crime to raise an expediential rate. The printing industry had just took off, which provided much more and cheaper printed material and more people were becoming literate causing the demand for printed material to increase. This...
I believe that crime fiction will continue to evolve and will stay a very popular genre for much time. Many things will change and although novels will still be written, TV series' will become more popular as the genre expands. There will be many changes in the style and media but as we have seen the basic structure of crime fiction will still remain unchanged.

Crime fiction is very popular, always has been since the first ever crime fiction story, and most probably still has much more development to come and will remain popular for some time.