defense attorney loevy tries to discredit turner, saying she never saw cory's body. and her opinion that cory's body was in full rigor mortis conflicts with the first responders on the scene. >> yes. >> reporter: if cory lovelace's body was pliable, as the defense claims, full rigor mortis had not set in and she did not die the night before. when coroner keller is on the stand, loevy belittles his role in the case. >> you were at the scene of >> reporter: loevy came down hardest on detective gibson. >> no. >> reporter: he grills gibson about rigor mortis. >> at what point did you learn that you were wrong, that the body was in full rigor at the scene? >> i don't know to this... to this day that i'm wrong. >> reporter: then, a new twist: loevy accuses gibson of withholding evidence-- emails that never made it into the first trial. >> yes. >> reporter: the defense was able to recover those emails. loevy reads one email from a pathologist who told gibson he could never make a good murder case since cory's death had originally been ruled undetermined. >> i believe so. it