When I first looked into Mystery (or is it Crime Fiction?) a few years ago it began and ended for me with the 'Find the Murderer' type of novel as well as those bestselling series of novels with one protagonist who solves a case per book.
I understand there is more than that -- and I was curious what would count as belonging under the umbrella Mystery and what would be left in the rain. What are the names of subgenres?
There is Noir (where does that term come from anyway? Film Noir, by any chance?), what else is there? Which niches exist? And then, ultimately, what *is* mystery/crime fiction to you, how would you define it?