Blaine Alexander

Her cause of death?

Strangulation.

So once authorities determined this was a homicide, what made them zero in on Paul?

In his interview with police, Paul actually mentioned that.

Even though the relationship was rocky the night before the fire, Jennifer...

Threw Paul a party.

That's right.

Based on the photos that we've seen, it looked like a beautiful celebration with cake and everyone was having a great time.

But apparently later that night, the two had gotten in a fight and Jennifer went home alone.

And they exchanged these like angry text messages.

Paul told police when he went home, they actually made up.

But text messages continued the following morning and showed that the couple began to argue again.

And things really escalated to a point where Jennifer threatened to file charges against Paul.

All right.

So we fast forward to trial in 2011 and prosecutors present all this evidence against Paul.

What was his defense?

Well, Paul actually hired famous attorney Mark Garagos, who you may have heard of.

I just interviewed him for the Arcom special.

Exactly.

So they had a great defense team and Paul actually took the stand in his own defense.