When it came to serial killing, Stephen Griffiths did everything by the book. He targeted prostitutes in the slums of Bradford, a city in Northern England. He chose a unique murder weapon: a crossbow. He claimed to have eaten parts of his victims—two of them cooked, one of them raw. "I'm misanthropic," he told police investigators when he was finally caught in 2010. "I don't have much time for the human race." When he appeared in court, he gave his name as the "crossbow cannibal." It was as if he'd studied up on the art of serial murder. (In fact, he had: Griffiths was a part-time Ph.D. student at Bradford University, where he was studying criminology.) And yet, for all his efforts, he got only one short blurb in the New York Times when he was sentenced last month.
Serial killers just aren't the sensation they used to be. They haven't disappeared, of course. Last month, Suffolk County, N.Y., police found the bodies of four women dumped near a beach in Long Island. Philadelphia police have attributed the murders of three women in the city's Kensington neighborhood to one "Kensington Strangler." On Tuesday, an accused serial stabber in Flint, Mich., filed an insanity plea.
But the number of serial murders seems to be dwindling, as does the public's fascination with them. "It does seem the golden age of serial murderers is probably past," says Harold Schechter, a professor at Queens College of the City University of New York who studies crime.
Statistics on serial murder are hard to come by—the FBI doesn't keep numbers, according to a spokeswoman—but the data we do have suggests serial murders peaked in the 1980s and have been declining ever since. James Alan Fox, a criminology professor at Northeastern University and co-author of Extreme Killing: Understanding Serial and Mass Murder, keeps a database of confirmed serial murderers starting in 1900. According to his count, based on newspaper clippings, books, and Web sources, there were only a dozen or so serial killers before 1960 in the United States. Then serial killings took off: There were 19 in the 1960s, 119 in the '70s, and 200 in the '80s. In the '90s, the number of cases dropped to 141. And the 2000s saw only 61 serial murderers. (Definitions of serial murder" vary, but Fox defines it as "a string of four or more homicides committed by one or a few perpetrators that spans a period of days, weeks, months, or even years." To avoid double-counting, he assigns killers to the decade in which they reached the midpoint of their careers.)
There are plenty of structural explanations for the rise of reported serial murders through the 1980s. Data collection and record-keeping improved, making it easier to find cases of serial murder. Law enforcement developed more sophisticated methods of investigation, enabling police to identify linkages between cases—especially across states—that they would have otherwise ignored. The media's growing obsession with serial killers in the 1970s and '80s may have created a minor snowball effect, offering a short path to celebrity.
But those factors don't explain away the decline in serial murders since 1990. If anything, they make it more significant. Then why the down trend? It's hard to say. Better law enforcement could have played a role, as police catch would-be serial killers after their first crime. So could the increased incarceration rate, says Fox: "Maybe they're still behind bars." Whatever the reason, the decline in serial murders tracks with a dramatic drop in overall violent crime since the '80s. (One caveat: The numbers for the 2000s may skew low, since some serial killers haven't been caught yet.)
As the raw numbers have declined, the media have paid less attention, too. Sure, you've still got the occasional Beltway sniper or Grim Sleeper who terrorizes a community. But nothing in the last decade has captured the popular imagination like the sex-addled psychopaths of the '70s and '80s, such as Ted Bundy (feigned injuries to win sympathy before killing women; about 30 victims), John Wayne Gacy (stored bodies in his ceiling crawlspace; 33 victims), or Jeffrey Dahmer (kept body parts in his closet and freezer; 17 victims). These crimes caused media frenzies in part because of the way they tapped into the obsessions and fears of the time: Bundy, a golden boy who worked on Nelson Rockefeller's presidential campaign in Seattle, seemed to represent the evil lurking beneath America's cheery exterior. Gacy, who dressed up as a clown and preyed on teenage boys, was every parent's nightmare. "Son of Sam" David Berkowitz milked—and, in so doing, mocked—the media's obsession with serial killers by sending a letter to New York Daily News reporter Jimmy Breslin.