Once upon a time, there lived a little old lady in Sacramento, CA in the 1980s. Dorothea Puente ran a boarding house for the sick and elderly. She provided a room to stay and food to eat, but no one could have imagined what she was really doing. Dorothea spent her time as a landlady poisoning those that lived under her care, stealing their Social Security checks, and burying their dead bodies in her yard. What was once thought to be a kind old lady turned out to be Sacramento's worst nightmare.

Sources:

• https://allthatsinteresting.com/dorothea-puente
• https://www.investigationdiscovery.com/crimefeed/crime-history/death-house-landlady--a-look-back-at-unexpected-serial-killer-do
• https://en.wikipedia.org/wiki/Dorothea_Puente
• https://www.latimes.com/local/obituaries/la-xpm-2011-mar-28-la-me-0328-dorothea-puente-20110328-story.html