one had to do with a story they heard about her first marriage. >> her previous husband, roy lovin, told us that teresa had put rat poison in his mashed >> reporter: and he knew that how? >> roy said that he took two bites and fed some to their son teresa reached into her son's mouth, pulled out the mashed potatoes. roy said that he got pretty ill after that. >> reporter: the son was okay? >> the son was okay, yes. roy said that the only other thought that he gave that was when his german shepherd was poisoned. roy said that he never connected the two until raymond was poisoned. >> reporter: teresa's son from that first marriage is roy jr., and he says that never happened. >> reporter: there's a story out there that your mom tried to poison your father. >> it's all lies. >> reporter: why would your father lie about this? >> maybe he is jealous. maybe he -- maybe he feels that she ruined his life. i don't know. maybe this is his way of getting >> reporter: and, there was a polygraph exam she took she took early in he investigation. the examiner had asked teresa two questions: did you pois