“She’s likely to be in her twenties or thirties, middle-class, probably married, probably Christian, probably average intelligence,” Harrison said. “I just described, you know, your next-door neighbor.” (Something similar is true of male serial killers, who tend to possess average intelligence and work blue-collar jobs. Very few are legally insane.) Altogether, the women on the list had killed at least three hundred and thirty-one people, an average of six victims each. More than half had murdered children, and a quarter had targeted the elderly and infirm. Female serial killers also appear to have become more common over the years. Harrison’s team identified thirty-eight who were active in the United States between 1965 and 2014, compared with just fifteen during the preceding fifty years. That’s an increase of more than a hundred and fifty per cent, although, Harrison noted, it’s possible that serial killers are simply more likely to be caught in the modern era.
Read Lady Killers in the New Yorker.