dr. macneill began an affair?en "dateline" continues. make sure you're keeping up with your kids' online accounts and the social media they're using. talk with them about appropriate online behavior. being proactive and involved is the best way to protect your kids from predators and bullies. the more you know. >>> what a strange thing it was, that the day martin macneill was charged with murdering his wife, his daughters' only regret was that it had taken more than five years. >> i think my dad really got off on seeing what he could get away with. >> when the trial began this october 17th, provo, utah, martin was noticeably pale and prosecutor chad grunander was a little worried. it seems like a case where you kind of got the impression that the guy was guilty, but proving it was not going to be an easy manner. >> it's going to be difficult to wrap it all up early and give the jury this nice little box with a bow on top. >> gypsy willis and the defendant -- >> the prosecution told the jury that martin drugged and

macneil/lehrer. no matter what the politics itty-bitty in the way they could want another. i think that we are important for dr. kirk. you would have to ask mrs. kirk or maybe lead about where he would vote this year. i think it would be pretty disciplined with the way politics have gone. not necessarily with the candidates but with the way the candidates are behaving. i think he would be pretty shocked. how's that for a non-political political answer? >> brad, thank you. you said that you started reading dr. kirk in 1989, and i was just one as you're going through his papers, far from the absence of typos in his correspondence, was the biggest surprise that you encountered? >> i don't embarrass mrs. kirk too much. dr. kirk and mrs. kirk got married in 1964, and when did you meet? 1960? 1960. even though russell had many very innocent relationships, they did have a lot of relationships, and i wasn't expecting that come and that's not a very interesting discussions about dates, going to movies. he used to judge his dates by have responded to certain movies. he was a huge fan, and very interesting. some dates ar