Ekaterini Dimetrea
Ekaterini Dimetrea (Greek: Αικατερίνη Δημητρέα; 1920 – April 10, 1965), known as The Poisoner of Mani (Greek: δηλητηριάστρια της Μάνης), was a Greek serial killer who fatally poisoned four family members with parathion from May to September 1962. After her arrest, she confessed to the killings and claimed that she intended to poison her entire village out of personal spite, because she had allegedly been mistreated by them.