Prosecutors say Martin MacNeill was having an affair when he drugged and drowned his wife, Michele, in 2007. He has pleaded not guilty to her murder.
Last week featured testimony of two key witnesses for the prosecution, Rachel MacNeill, the eldest daughter of Martin and Michele MacNeill, and Martin's ex-lover Gypsy Willis.
The defendant barely looked at his daughter while she struggled through her testimony.
Prosecutors argue MacNeill forced his wife to get an unwanted facelift and then filled her with a lethal concoction of prescription drugs. Soon after she died, MacNeill rushed to hire his mistress Gypsy as a nanny. It quickly became clear there was more to the relationship, CNN's Stephanie Elam reports.
HLN's Legal Analyst Joey Jackson weighed in on Monday's "New Day," explaining what the process will be for this week behind MacNeill's youngest daughter Ada, who was just six when her mother died, and her participation in the trial.
Jackson said, "She's so young at the time, so you have to question, did she really see what she saw? However, you have to let her testify, but here's what the judge said. The judge said, 'You are so influenced over the years Ada, by your sister who you're staying with, Alexa Summers, that she in fact has garnered your testimony, she has made your mind and manipulated you in such a way that it's not going to be, not only credible, but it's not even something we can allow the jury to hear. So we'll hear the video tape and allow the defense to question her on that video tape thereafter."
SEE FULL INTERVIEW WITH "NEW DAY'S" CHRIS CUOMO