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.jstor.org/stable/23400917
https://chicagoreader.com/arts-culture/in-print-dorothea-puentes-killer-cookbook/