How many active serial killers are in the U.S. at any given time?
If you're looking for a reason to stay awake all night (or to get your stubborn parents to invest in an alarm system), just remember that there are 25 to 50 active serial killers in the United States at any given time. John Douglas, a former chief of the FBI's Elite Serial Crime Unit and author of Mind Hunter notes that 25 to 50 is "a very conservative estimate". The good news is that out of all the murders that take place, the serial kind only makes up less than 1%. Of murders. Sweet Dreams! Source: John Douglas, former chief of the FBI's Elite Serial Crime Unit and author of Mind Hunter