He came to crime fiction after a literary meander worthy of one of his own subplots, through Muriel Spark's The Prime of Miss Jean Brodie and Robert Louis Stevenson's The Strange Case of Dr. Jekyll and Mr. Hyde. Spark's novel, set in a private girls' school, is about the proper refined Edinburgh -- an Edinburgh that Rankin feels never existed. Although Stevenson located his classic novel in London, he was really writing about Edinburgh, Rankin says, through the character of Jekyll, a repressed man riddled with heinous urges.