27. K.D. Kempamma
K.D. Kempamma is now considered one of India’s most loathsome serial killers and is arguably one of the nation’s very first woman serial killer. She earned the nickname Cyanide Mallika for her brutal and distinct method of claiming her victims.

Cyanide Mallika first gained her victims’ trust, often by pretending to be some sort of leader endowed with a higher power. When she felt she had them ensnared, she would lure them into secluded areas and poison them, usually taking whatever possessions they had on them before running off. In total, six deaths were attributed to Cyanide Mallika.
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