>> yes. >> the jodi arias trial never played as a murder mystery. jodi, after all, had admitted to 12 jurors in open court, and a few million viewers on tv, that she was the one who shot, stabbed, and then stabbed some more her former boyfriend and secret sex partner. >> as to count one, first degree murder, guilty. >> why, then, did so many millions of trial followers stick around for the final act? [applause] and why did so many leave home and work to gather on the courthouse steps to await the final verdict? we'll take an in-depth look at the case, into why jodi arias became so obsessed with travis alexander, and why so many of you became obsessed with this trial. >> hello. >> we start with this home video, played for the jury. it shows travis holding court amid a circle of friends. look a little closer and you'll see a blond tenderly nestled in his lap. that's jodi, in much happier times, when she and travis first started dating. no hint then of what was coming. >> we were excited for travis finding somebody that he was interested in. >> chris hu