Toni Hartzong

How do we know you don't?

And remember prosecution witness Carol Parkman, the neighbor who testified she heard Bob and Tony arguing?

Well, it turns out, in previous interviews with investigators and attorneys, she told a different story.

Now, do you remember your answer when I asked, could you recognize the voices that you heard?

You stated no, didn't you?

and Maxwell discredits her previous testimony.

You also stated that the pitch of the tone of the conversation you heard was not aggravated, but was a normal conversation, correct?

There's another big problem for the prosecution.

Crucial mistakes by the initial investigators after the crime.

Mistakes even the prosecutor acknowledges.

Isn't that standard procedure?

Shouldn't that have been done?

The original investigators also failed to request records from cell phone towers that would have pinpointed Bob's location throughout the day by tracking the signal from his phone.

Those records are now gone.

Let's talk about this mitochondrial.

Maxwell points out to the jury other unexplained pieces of evidence, unidentified hairs found on Tony's body.

There were foreign hairs all over this woman's body.

Tests showed none were Bob's hairs, and Maxwell tries to create doubt in jurors' minds.

So as we sit here today, we don't know whose hair was found on Mrs. Hartong's body.

That's crucial for the state's case, and they haven't met that.