all of the evidence pointed toward patty stallings. if somebody fed the baby antifreeze, it must have been her. >> the jury also heard what patricia stallings said to the social worker when informed of ryan's death. patricia stallings was found guilty of murder in the first degree and was sentenced to life in prison without possibility of parole. her husband david collapsed in shock after hearing the verdict and was rushed to the hospital. >> she was just devastated. she was very upset. she was crying. >> although the jury had reached its verdict beyond a reasonable doubt, two local scientists had doubts of their own. ;ñ;ñ;ñ >>> although patricia stallings was found guilty of the poisoning death of her son ryan with antifreeze, not everyone was convinced. dr. william sly and dr. james shoemaker wondered whether the lab tests done by their colleagues and by the smithkline beecham lab were accurate. >> it was only when i found out no one had really thoroughly explored the science behind the ethylene glycol test that i became convinced tha