Martin Edwards's always fascinating blog, Do you write under your own name?, has recently included a couple of references to the town of Marple in Cheshire (or, more accurately these days, Greater Manchester). His first post discussed the theory that Agatha Christie's famous detective was named after the town. Yesterday, he discussed the now largely-forgotten crime writer, Joyce Porter, who was apparently born there.
I've found this interesting since, as it happens, I've lived in Marple for over ten years. What's more, there's at least one other current crime writer living in the vicinity, and the writer Edmund Cooper - best remembered as a science fiction writer but author of at least one crime novel - was also born in Marple.
Given that Marple's a fairly pleasant little place on the edge of the Peak District, with a very limited number of mean streets, I'm not sure how to explain this affinity with crime fiction. The attraction of opposites, maybe.