But what was once a minor and even scorned genre has taken on new importance and credibility as society and our lives increasingly take on a noirish (or for the Italians, yellowish) tinge. Italy, like England, is a good setting for this sort of thing. With England, you have the contrast between the historically repressed, formal and oh-so-civilized veneer and the raging human badness/madness underneath. With Italy, you have the even greater contrast between the unequalled beauty, art, and sensual enjoyment, all in a sunny clime with exuberant people, and the ruthless brutality and darkness at its foundations.
There could be no better introduction to this world than the site Italian Mysteries. It is a thorough compilation of thrillers set in Italy, and thus includes both Italian works available in English and the numerous English-language books set in Italy. The webmaster has taken the time to provide painstaking ratings. If you are learning Italian and like mysteries, it might be a good idea to explore the Italian authors in the genre, perhaps investing first in dual copies (translation and original Italian) until you can read the Italian on its own.