https://www.aetv.com/articles/belle-gunness-the-early-20th-century-female-serial-killer-you-probably-havent-heard-of
The Early 20th Century Female Serial Killer You May Not Know | A&E
Aug 28, 2025 - By the time she was discovered, there were at least 12 victims.
early 20th centuryfemale serial killer