As the Ellen Greenberg case moves from court to a renewed bid to find her killer, her father floated a new theory for how she died – not from her stab wounds but by manual strangulation.

Medical examiners at first ruled Ellen Greenberg's death a homicide ... The lawsuit also questions whether some of the injuries Greenberg suffered to her neck were deep enough to incapacitate ...

Nancy Grace investigates the suspicious suicide of Ellen Greenberg, a Philadelphia schoolteacher found dead in her apartment with 20 stab wounds; questions persist as to whether it was suicide or ...