Peter Van Sant

It occurred the day before investigators think Gary was shot.

Here's Scott.

But Melody told me she didn't throw the plate because of Gary.

She threw it because Scott had yelled at her for not having dinner prepared for him.

And that's when, according to Melody, the plate took flight.

Melody and Scott have different versions of that incident, but Gary's recovered cell phone record showed that he pulled out his phone and hit record.

Gary is saying this is what happens when you leave a plate and forget to take it upstairs as he shows the shattered pieces scattered on the ground.

He adds minor temper tantrum.

In that last part, he's saying that he had supper and that it was fixed for him, so, quote, I'm sure I'll be feeling poorly here within minutes, directly referencing the idea Melody might be poisoning him.

The next day would be his last.

Tired of the fighting, the lies, the humiliation, the secrets, Scott said his father was ready to finally divorce Melody.

And detectives believe that Melody may have also wanted out.

And how serious is this relationship between Melody and Rusty?

The clues from the case were pointing to Melody as the likely murderer.

But detectives didn't make an arrest that summer.

Instead, they turned to Melody's lover, Rusty Barton, to see if he would secretly record their main suspect.

From 48 Hours, this is Blood is Thicker, the Ferris wheel produced by Sony Music Entertainment.

I'm your host, Peter Van Sant.

Judy Tigard is the executive producer of 48 Hours.

Original reporting by 48 Hours producers Betsy Shuler, Ryan Smith, and Hannah Vare.