Dorothea Puente
Dorothea Helen Puente (née Gray; January 9, 1929 – March 27, 2011), also known as the Killer Landlady or the Death House Landlady, was an American serial killer and financial fraudster who murdered various tenants of the boarding house she ran in Sacramento, California, between 1982 and 1988. Posing as a landlady, Puente procured various elderly and mentally disabled people to stay at the boarding house she ran.