The investigation into the mysterious 2015 poisoning of a woman in upstate New York and a family plunged into a nightmare of backstabbing and vengeance is a book I need to read. Mary Yoder's story sounds very interesting to me. My first impression is that the husband or son may be her killer but could it be the son's girlfriend? I love true crime stories like this and finding out who did the killing and seeing them get what they deserve.