and we slept together and we took two xanaxes. she took two more before me and we went to bed. >> so you slept together that night? >> oh, yeah. made up and then we video ourselves. i mean, honestly, i probably shouldn't be saying that but that's -- her phone, her video. >> so you had sex with her last night and videoed it? >> yeah. >> sure enough. when police looked at jennifer's cell phone, there was a video. she and paul having sex after their fight hours before she was murdered. >> so enthusiastically that anybody who watches it is never going to have the impression or take away from that that this was somebody who was ready to kill her. >> and as for that cell tower evidence that the prosecutor gillingham presented that seemed to show that paul had jennifer's phone with him and sending out fake messages in her name? that was nonsense, says geragos. >> that was one of the pieces of information that was imploded. we went and got the engineer, the actual engineer from the carrier to come in and say he looked at the evidence and what this guy said was the phone pinging off the same towers was not. it was just merged data from the cell phone. >> why is that important? because, says geragos, the prosecution's own timeline should have cleared paul zumot. >> the solution? paul zumot himself appears to have demanded it. the chance to defend himself to the jury by testifying. some courtroom observers believe the defense had already created a reasonable doubt that testifying was in fact, risky. especially for paul, said his friend. >> knowing paul the way i know paul and the way he could be interpreted incorrectly, i was