“By definition alone a crime novel must have a crime, right? Therefore, we must have a perpetrator and a victim, or if you want to get technical, an antagonist and a protagonist. These are the three basic elements of a crime novel—just add blood and stir …
A crime from two points of view
What I’d like to explore is the two views of that crime, however gruesome, from our main players. The victim as witness, from the outside looking in, and the perpetrator, from the inside looking out. In most crime novels, the perspective, or point of view, will be from either the protagonist or antagonist, but rarely both.”
Read more via How to write about crime from two points of view.