Erin Moriarty

Show me the pictures you have here.

Tell me who this is.

This was about the time when you had the heart attack.

Yes, right.

One day in November 2009, Daniel was home with his father when Bill says he had started feeling dizzy.

It must have been terrifying for Daniel, who started banging on his father's chest.

something Daniel later said he had seen on a medical drama.

It worked.

Daniel had saved his father's life.

About a month later, Daniel was presented with an American Red Cross Heroes Award.

Sure enough, there was Daniel, featured in local newspapers, hailed for his heroism.

In photos, he looks innocent and sweet, wearing a suit with a rosebud in his lapel.

his father proudly standing beside him.

The next year, Daniel enrolled in the Davis Police Department's Youth Academy, receiving instruction on crime scene investigation.

But while Daniel may have appeared a model citizen on the outside, he was also harboring a dark side, something Bill said he didn't notice until after his heart attack.

You know that he told counselors that he was actually killing animals before then.

Did you have any sense of that?

But he told the FBI agent that he had thought about killing your wife's... Lover.

Lover, that he thought about killing her.

That was two years earlier.