Stella Maudine Nickell ( born August 7 , 1943 ) is an American woman who was sentenced to 90 years in prison for product tampering after she poisoned Excedrin capsules with lethal cyanide , resulting in the deaths of her husband Bruce Nickell and Sue Snow . Her May 1988 conviction and prison sentence were the first under federal product tampering laws instituted after the 1982 Chicago Tylenol murders
Chicago Tylenol murders
Chicago Tylenol murders
Stella Nickell