jackson's death, he managed to get jack to sleep without propofol. the impact on jackson's performance was immediate. he could readily be seen at the footage played at the trial during kenny ortega's testimony. >> here entered full of energy and desire to work and full of enthusiasm. it was a different michael. we had two very successful days at rehearsal. michael was feeling great and look at me and asked me if i was happy and i said i was happy and he said he was very happy. >> as you now know, he never returned to staples center. following that rehearsal, michael was taken home and arrived home at about 1:00 in the morning. what transpired from 1:00 in the morning until michael's death?