Juju Chang

And there, the evidence collection begins.

Peter is already telling the San Diego Police Department that QC is dead.

He's talking to them in a very low, very casual, unemotional way.

He has what appears to be a human bite mark on his forearm.

Either he's the aggressor or he's the victim.

One thing was noticeably lacking, and that was any concerns about his children.

They had anticipated that he'd want to know what had happened when no one had shown up to pick them up from school.

When can I see them?

And none of those questions really came.

Now remember that Peter claims that he asked a man named Juan to come to his house for a paint job.

Then this man proceeded to kill his wife, QC.

Our investigators had to track down information that would substantiate or negate this story.

while they're still with Peter down in San Diego.

I go back in the house, and I'm walking around the house, looking at the house, trying to figure out if they even needed painting.

His house had been freshly painted.

And surely someone would have seen Juan at the manned guard shack at the community where the Chadwicks live.

We were able to start looking at the surveillance tapes from the gate shack.

And Peter originally told San Diego dispatcher that she was killed at 11 o'clock.

And we have Peter's car on tape leaving by himself at 1.30.

That was a big revelation in the case.