9 most evil female serial killers – Their evil deeds will leave you speechless (With Pics)

9. NANNIE DOSS

A.K.A. – THE GIGGLING NANNY

Most evil female serial killers: Nannie Doss’s list of victims included those who were closest to her: four of her five husbands, her mother, her sister, her grandson, and her mother-in-law. Her arsenic-infused slayings took place across four states and she became known as “The Giggling Granny” due to her tendency to laugh merrily during interrogations. Of her murdered lovers she said, “I was searching for the perfect mate, the real romance of life.”