Blanche Taylor Moore, now 93 and death row's oldest woman, poisoned multiple men with arsenic over decades—including her husband, longtime boyfriend, and a pastor she married. When investigators discovered 20 times the lethal dose in one victim's system, they exhumed everyone connected to her, finding arsenic in nearly every body. Blanche systematically poisoned at least four men across 30+ years, administering arsenic gradually through meals while appearing as a devoted Christian woman and caregiver to hide her murders.