Other high-profile cases including those of phil specter and casey anthony. the appearance of the injury leaves no doubt that this is not a healing wound. reporter: in a darkened courtroom, spitz showed photos and talked about that cut inside cory s mouth. curtis had told police his wife had fallen in the days before she died, his explanation for that injury. but this expert said he saw no signs the cut was an old one. there s no evidence of healing. so this looks like at the time it was incurred. reporter: the abrasion on the outside of the lip and the cut inside indicated to spitz that an object, like a pillow, had been placed on cory s face shortly before she died. this is not an accident, this is not a natural death, this is not a suicide, this is a homicide. reporter: then came testimony the first jury never got to hear, and it was explosive.