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famously known as "The Giggling Granny," was an American serial killer who operated in the mid-20th century. Born in 1905 in Alabama, Doss led a seemingly ordinary life as a wife and mother.

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Between the 1920s and 1950s, Doss murdered at least 11 people, including four of her husbands, two of her children, her mother, her sister, her grandson, and several other relatives.

killing method: arsenic poisoning, which she administered through food and drinks.

Her nickname was "The Giggling Granny".

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Nannie Doss's case stands as a chilling reminder of the dangers posed by individuals with untreated mental illness and the complexities of identifying and apprehending serial killers within familial settings.

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Nannie Doss's reign of terror came to an end in 1954 when authorities finally caught up with her in Oklahoma.

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In 1955, Nannie Doss was sentenced to life imprisonment without the possibility of parole. At the time of her trial, Oklahoma still maintained the death penalty, but Doss's sentence was commuted to life imprisonment due to her gender and her guilty plea.