20 Female Serial Killers you've Never Heard Of

These women hid their darkest secrets in plain sight. Join us as we count down some of history's most chilling and lesser-known female serial killers! From poisoners to predators, these cases will leave you stunned. Our list includes the "Giggling Granny" Nannie Doss, the "Soap-Maker of Correggio" Leonarda Cianciulli, and more. Which case shocked you the most?

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