For the full story, watch “Poison Twist” on Peacock now. You can also watch on the NBC app or listen on our podcast . After ...

Prosecutors reportedly argued Kaitlyn Conley poisoned Mary Yoder, for whom she had worked for four years, as revenge against Yoder's son, Adam Chris Harris has been a senior true crime reporter ...

NBC Dateline has reported on some of the most shocking true crime stories, and the poisoning of Mary Yoder is not an exception.

In 2017, Kaitlyn Conley was found guilty of manslaughter in the poisoning death of her ex-boyfriend's mother Mary Yoder. Seven years later, the 31-year-old continues to maintain her innocence and ...

Poison. Prison, will feature Conley, a 31-year-old former receptionist who claims she has been wrongfully convicted of the ...