Another way Thomas Harris manipulated the facts concerns serial killers themselves, their psychology. The original FBI criminal profiler, Robert Ressler, on whom the guy in The Red Dragon is based, has found serial killers fall into two categories, disorganized and organized. Organized serial killers are generally pretty intelligent and harder to catch, but none are as brilliant as Lecter. In his own book, Ressler mentions Harris visiting him to do research and not liking Ressler's scheme, so Ressler to some extent disparaged the credibility of Dr. Lecter. As I recall, Ressler said these killers tend to engage in a lot of criminal and sexual, and criminal sexual activity, starting in their youth, long before they become killers. Yet Lecter is simply one who is brilliant, would disdain eating his victims with steak seasoning
, and doesn't seem to have any sexual obsessions related to it.