I'm doing research to write my first crime / thriller and outside of what I've seen portrayed in films and a few tv shows (criminal minds, hannibal, etc) I really don't know much of the process and I do not want my detective/officer/agents seeming too flat and one dimensional in my story. I'm looking for non fiction to stay as true to life as possible but I'm open to fictional novels, films or television series if they have pretty accurate portrayals.