Utah mother Kouri Richins published a children's book about grief after her husband Eric's sudden death, then was arrested and convicted of poisoning him with fentanyl—a case that unfolded publicly after her appearance on a local TV show promoting the book. Kouri Richins administered five times the lethal dose of fentanyl to her husband Eric's cocktail during a celebration, according to prosecutors who connected the crime to fentanyl purchased through the family housekeeper.