In a small southern Illinois town, Emily Ahrens, a rather plain, unexceptional 17-year-old girl, dies suddenly, horribly and inexplicably, at home. There appears to be no rational explanation for her death. Tests soon confirm that Emily died of kidney failure due to arsenic poisoning. Tests also confirm that she was not pregnant. A coroner's inquest, called to decide whether her death was suicide, accident, homicide, natural or undetermined concludes the death is undetermined. With no evidence of foul play, local authorities are reluctant to investigate. The girl's father, Walt Ahrens, a...