mark wangler is innocent.olice investigation, an investigation despite what you just heard from the prosecution, did not eliminate fugitive carbon monoxide as a source from the hot water heater. >> the water heater was now at the heart of the wangler defense. if the jury believed it malfunctioned that night could've sent carbon monoxide in kathy's room, that was reasonable doubt. >> are you worried that a jury won't, in the end, believe your story? >> sure. it's always a possibility. >> do you think about what it would be like? a south to last of your life in prison. >> i try not to. for the most part. >> sounds erin and nathan provided key testimony. >> how would you describe your father? >> i'm great now. very humble, passionate, caring. >> very relaxed, down to earth. very humble. >> have you ever, for a moment, doubted your dad's innocence? >> never once. >> both erin and nathan said they believe their parents really did love each other. >> up to the day of her death, deeply pure father loved your mother?

he was only following evidence, he says, that led to a very sad conclusion about mark wangler. >> i think there is a lot of rage. although he wanted to live right where he wanted to have a good marriage, i think he couldn't. so -- >> you think he didn't see a way out? >> i don't think you saw a way out. >> that's all for this edition of dateline. i'm andrea canning. thanks for watching. ks for watching. ♪ ♪ ♪ >> welcome to morning joe weekend. it was an historic week for the country, as we follow the second indictment of former president trump. let's take a look at the week's top stories. >> as you know, i can't talk about particulars of this or any other ongoing criminal manner. as i said when i appointed mr. smith i did so because it underscored the justice department's commitment to an oath independents and accountability. mr. smith is a veteran career prosecutor. he has assembled a group i've experienced and talented prosecutors. and agents, whose share his commitment to integrity and the rule of law. any questions about this matter will have to be answered by their filings in the cou