Andrea Canning

They are particularly interested in the knife that was used to kill Betsy.

According to the defense, the crime lab found the DNA of an unknown male and the victim, but not Pam Hopp.

Do you think that we'll ever hear Pam testify?

In the end, you know, this boils down to justice for Betsy Faria.

You spoke with one of Betsy's daughters, Keith, for one of your Dateline episodes on the case.

And she has said she will be at the trial this summer.

I mean, the family, there's so many layers to this and what the family has been through.

You know, it's hard enough with one trial, one suspect, you know, one defendant.

I mean, it's just so unfair to them.

Keith, thank you for joining us.

And, you know, we look forward to talking to you about this case that keeps on giving.

When we come back, the countdown is on for Corey Richen's murder trial.

Could a last-minute switch-up from a key witness shake up the case against the Utah mom?

Over a year ago, and before her murder trial was even on the Summit County docket, Dateline received exclusive jailhouse audio from Corey Richens, the Utah mom accused of poisoning her husband.

I'm anxious.

I'm anxious to prove my innocence.

I'm anxious to get to trial.

And I'm ready to get this one heck of a fight.

You took an innocent mom away from her babies.

Richens has pleaded not guilty to the charges against her.