>Those people are not easy to catch
Gary Ridgway had an IQ in the low eighties and got away with it for twenty years. Dahmer got caught with a naked man begging to be saved and convinced the cops it was just his high boyfriend. Richard Chase got caught rolling around in animal blood naked on a beach and convinced cops he had just cut himself.
Not to mention how differently female psychopaths behave from males and being much, much less common.
