prosecutor brahim baytieh knew it would be a tough case.sical evidence tying paul to linda's death, and paul's defense attorney had a very different theory about how that nicotine got into linda's system. a theory that hinged on a stunning question-- could linda have poisoned herself? coming up. lisa cappleman: she was very, very desperate to find a cure. craig melvin: what other secrets would tumble out in court? i go upstairs to the extra bedroom, and i'm going, oh my gosh. craig melvin: when "dateline" continues. if you take or have taken humira for moderate to severe crohn's disease or ulcerative colitis and still have symptoms... you don't have to settle. ask your gastroenterologist if switching to rinvoq is right for you. it's one of the latest treatments from the makers of humira. rinvoq works differently than humira and may help. rinvoq is a once-daily pill that can deliver rapid symptom relief, lasting steroid-free remission, and helps visibly reduce damage of the intestinal lining. rinvoq can lower ability to fight infections. bef