An update on the trial of Casey Anthony, the Florida woman on trial for the murder of her 2-year-old daughter Caylee in 2008, includes an interview with former Anthony attorney Andrea Lyon. Also: a report on Williams syndrome, a rare genetic disorder with an unusual side effect (people with it often have sunny dispositions); advice on coping with elevator mishaps; and Barbara Walters' musings on how and why political wives react the way they do when their husbands are caught cheating on them.