mark was sometimes distant and even rude to those he deemed his social inferiors. the summer of 2004, the month before he disappeared seemed to be the real turning point. michelle was pregnant. >> both of us could not have been happier at that moment. those good feelings lasted a couple weeks. and then i had to go to hawaii for an apa conference i was presenting at. >> presenting at the american psychological association's conference that july was a prestigious honor for a grad student like michelle. michelle says even though mark begged her not to go, she went anyway. >> things started to change while i was in hawaii. he called me and said that the lawyers are claiming he was doing unnecessary surgery and he was afraid it would become a class action suit, at which point he jumped 10 steps ahead and assumed his insurance