9 most evil female serial killers – Their evil deeds will leave you speechless (With Pics)

4. DOROTHEA PUENTE
A.K.A. – THE DEATH HOUSE LANDLADY

Dorothea Puente earned her grisly nickname because of the heartless crimes she carried out in her Sacramento, California boarding house. Her motive: money. Over the course of six years, Puente poisoned numerous elderly and mentally disabled boarders in order to collect their Social Security checks.