how crime fiction has evolved over the years

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This is a essentially an argumentative paper for a crime fiction class (a sub genre of detective fiction). the topic needs to be about how crime fiction, as a genre as evolved over the years. Focus on crime fiction, but go into depth about how crime fiction as changed and morphed over the years. Was this caused by changing views of the books readers? By the authors? Or did the books them selves morph over time, regardless of the time period and current popular views. But make sure to focus on crime fiction, not the eras themselves. Please use at least these books:
-Priestman, Martin Ed. The Cambridge Companion to Crime Fiction. Cambridge UK: Cambridge UP, 2003. Print. (ISBN-13: 9780521008716).
-Poe, Edgar Allan. C. Auguste Dupin Collection (The Murders in the Rue Morgue, The Mystery of Marie Roget and The Purloined Letter). CreateSpace Publishing/ Enhanced Ebooks, 2014. Print. (ISBN-13: 9781497423503).
-Doyle, Sir Arthur Conan and Kyle Freeman. The Complete Sherlock Holmes, Volume I (Barnes & Noble Classics Series). New York: Barnes & Noble, 2003. Print. (ISBN-13: 9781593080341).
-Hammett, Dashiell. The Maltese Falcon. New York: Vintage Books, 1989. Print. (ISBN-13: 9780679722645)
.-Christie, Agatha. The Murder at the Vicarage (Miss Marple Series). New York: HarperCollins Publishers, 2011. Print. (ISBN-13: 9780062073600)
-Chandler, Raymond. The Big Sleep. New York: Vintage Books, 1992. Print. (ISBN-13: 9780394758282).
-Mosely, Walter. Devil in a Blue Dress. New York: Washington Square Press, 2002. Print. (ISBN-13: 9780743451796).
-Leonard, Elmore. Fire in the Hole. New York: HarperCollins, 2012. Print. (ISBN-13: 9780062120342).
But no more then 9. You must also include quotes/summaries/paraphrases from the original texts.