Category: Serial Killing
Crime: An Australian multiple murderer, who used poison to rid herself of her victims.
Biography: In 1947 three of her family members died, and Grills became a suspect. When the police became involved in the case, they decided to test the tea that Grills was dispensing to these family members, as well as others. It was found to contain poison thallium.
In Sydney's Long Bay Prison, she became known as 'Auntie Thally', dying there of a ruptured ulcer.