Sweet old ladies you'd never guess were cold-blooded killers
Age is just a number when it comes to cold-blooded killers
LIFESTYLE old lady
Sweet little old ladies may not be the first thing that comes to mind when you think of a murderer, but there are worse covers out there. Grandmothers murder for diverse reasons, including money and alleged messages from God. In the gallery, take a look at some of these geriatric killers and the horrific acts of violence they committed, as compiled by Ranker.