In Cordele, Georgia, greed led Janie Lou Gibbs, a church going mother and grandmother who once ran a day-care center, to poison her three sons, a grandson, and her husband in the 1960s for the sole purpose of collecting life insurance.
During the 1880s in Liverpool, England, sisters Catherine Flannigan & Margaret Higgins worked together to poison their own family members in an attempt to claim insurance payouts.
In 2001, borderline personality disorder sufferer Katherine Knight brutally stabbed her de facto husband to death before dismembering him and using parts of the body to cook up a grisly stew; show would later be sentenced to life imprisonment.
Blanche Taylor Moore used arsenic poisoning to kill her loved ones for over 20 years.
Noticeably, she kept poisoning, over and over, her boyfriend, Raymond Reid. In 1955, Bar Hostess Ruth Ellis shot her boyfriend, David Blakey, to death after he caused her to miscarry and cheating on her with another woman.
She would wind up becoming the last woman to be executed in the United Kingdom.
The two sisters became known as "The Black Widows of Liverpool".
Catherine and Margaret were executed by hanging in 1884.
In New Orleans during the early 19th century, French socialite Delphine La Laurie was believed to be a cruel sadist who beat, tortured, and performed medical experiments on slaves in the basement of her mansion.
She was sentenced to death in 1920, but was released from prison after 11 years and lived the rest of her life as a cisgender woman.
Genene Anne Jones – In Kerrville, Texas, the pediatric nurse secretly killed as many as 46 infants left in her care between 19. However, due to developments in the case since this episode originally aired, she may be released as early as 2018.
Tracey Wigginton – In Brisbane, Australia a so-called "lesbian Vampire murder" – a tale of satanic rituals, and gothic goings-on, culminates in the slaying of a male victim to satiate Tracey Wigginton's lust for blood in 1989. NOTE: Tracey Wigginton would be released on parole on January 11, 2012, Laurie Tackett was released on parole on January 11, 2018Diane Downs – On May 19, 1983, in Springfield, Oregon, Downs shot her three children, killing one of them.
Her motive was simply to free herself of parenthood so she could pursue a romantic relationship with a married man who didn't want children and refused to leave his wife. Martha Wise – In Medina County, Ohio in 1925, Wise, who was mentally ill, poisoned three of her family members to death and crippled more than a dozen with arsenic because they did not approve of her choice of man.