In 17th century Central Europe Elizabeth Báthory a Hungarian noblewoman, was obsessed with youth and beauty. According to legend, Báthory murdered as many as 650 young women, believing that drinking their blood would preserve her youth. Báthory became known as the "Blood Countess."
Meanwhile, in Romania during the 1920s and '30s, Vera Renczi's fears of infidelity and abandonment ostensibly caused her to murder the men in her life. Renczi poisoned her husbands, lovers and one son with arsenic before placing their bodies in zinc-lined coffins in her wine cellar.
And finally, in New Orleans during the early 19th century, French socialite Delphine LaLaurie was believed to be a cruel sadist who beat, tortured, and performed medical experiments on slaves in the basement of her mansion.
And in Washington State, Linda Burfield Hazzard, a doctor and a delusional "fasting specialist," believed she could "heal" her patients through exhausting diets and starvation. Hazzard's practice of starvation resulted in the death of a visiting English heiress in 1911.