firsthand look at the murder scene. alec s defense attorneys called their final witnesses to the stand to try to poke holes in the medical examiner autopsy report. john: is the defense closing strategy working to sway members of the jury, nancy grace has been covering the murder saga from the beginning, join us live from outside the courtroom with her take-aways coming right up. i m really sorry that the lab leak has become such a distraction for so many people. frankly, we still don t know. there is no evidence to say. you said the overwhelming amount of evidence indicates it s a lab leak. i believe most card carrying viral virology and others would disagree with you. i think you are misunderstanding. international investigation led by the world health organization is something we have been pressing for. we need that data, we need that information from the chinese government. sandra: walk down memory lane, remember that, years ago and many years of it, denials from