Female serial killer Belle Gunness placed newspaper ads in Midwestern newspapers seeking male suitors. Some say there were as many as 40 victims of her crimes.
The term “serial killings” means a series of three or more killings, not less than one of which was committed within the United States, having common characteristics such as to suggest the reasonable possibility that the crimes were committed by the same person or persons. That’s according to a 1998 federal law passed by Congress.
While not intended to be the clear definition of “serial killer,” it is a means by which the FBI can assist local law enforcement agencies with their investigations since