Hard-Boiled Crime Fiction
This is the opposite of the ‘Cosy’ crime. The cosy crime being able to be read by young children. The ‘Hard-Boiled’ novel has terrible language, maybe a sexual encounter and the book is covered in blood dripping onto your lap. The gory details are graphic and intense. These stories are not very violent, but the results of violence are imaged.
The term ‘Hard-Boiled’ was started in the 1920s California. The Protagonist detective should have some significant flaws that need to hinder the capture of the criminal, but we have the impression that the detective knows and has an absolute sense of what is right and wrong.
It is possible to have some fun with dreaming up some buried and embedded flaws for the detective.
Unlike the ‘cosy’ sub-genre the hard-boiled sub-genre would need a lot of research into violent crime, forensics, blood splatter, and wounds.