All texts have value. Reality is redundant, we have achieved hyper-reality. Postmodernism in Crime Fiction Reject epistemologies such as literature and suspicious of genre boundaries. Blade Runner crosses genre boundaries. PM narratives are often amoral or at least lacking in moral certainty.
Style is substance.
The Last Words of Dutch Schultz. For example in most serial killer stories, the killer is found by an ingenious analysis of clues by the detective who learns to think like a psychopath . Compare how Jon Doe is caught in Se7en.