structural:summarization, linguistic:voice_change
Detective Commandments

Several authors have attempted to set forth a sort of list of “Detective Commandments” for prospective authors of the genre.

According to "Twenty Rules for Writing Detective Stories," by Van Dine in 1928: "The detective story is a kind of intellectual game. It is more—it is a sporting event. And for the writing of detective stories there are very definite laws—unwritten, perhaps, but nonetheless binding; and every respectable and self-respecting concocter of literary mysteries lives up to them. Herewith, then, is a sort of credo, based partly on the practice of all the great writers of detective stories, and partly on the promptings of the honest author's inner conscience." Ronald Knox wrote a set of Ten Commandments or Decalogue in 1929, see article on the Golden Age of Detective Fiction.

A general consensus among crime fiction authors is there is a specific set of rules that must be applied for a novel to truly be considered part of the detective fiction genre. As noted in "Introduction to the Analysis of Crime Fiction", crime fiction from the past 100 years has generally contained the following key rules to be a detective novel: