the state of indiana versus scott patterson, went to trial in late october 2010. was the timeline. scott's own security camera video was the star witness against him. no cameras were allowed in court, but they were audiotaped. >> but these are still images from his own system show that he had been home that whole time. >> reporter: hardly brought the weight bench into the courtroom, and planted it right before the jury. crime scene investigator jason page demonstrated for the panel, how lisa should have been able to wriggle out, given that she was in good health and it had not blocked down on her throw with force. a demonstrator he later repeated for dateline. >> reporter: how much effort to 50 expand to get these folks to catch? >> it's a turn of the race. >> reporter: and then you are out of trouble? or failing that the investigator says, lisa could have used her shoulder to shimmy off to the side. could you wriggle out from under there? >> yes i could you do it like this. >> reporter: but, if someone had been straddling over her, sitting on her chest preventing