Bertha Gifford: Angel of Mercy or Good Samaritan?

Bertha Gifford was well-known throughout her community for her cooking skills and her compassion. She acted in the role of nurse for her sick family and neighbors, and was eventually accused of murdering with arsenic a total of 17 people in her care. But what's most interesting about Bertha is that she also became one of America's first female serial killers.

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