Dorothea Puente looked like a harmless grandmotherly figure running a boardinghouse for people down on their luck. However, the discovery of buried bodies in her backyard called Puente's benevolent persona into question. 

Articles:

https://oac.cdlib.org/findaid/ark:/13030/c8b85fn5/entire_text/

https://www.latimes.com/local/obituaries/la-xpm-2011-mar-28-la-me-0328-dorothea-puente-20110328-story.html

https://www.jstor.org/stable/23400917

https://chicagoreader.com/arts-culture/in-print-dorothea-puentes-killer-cookbook/