"Yeah," Nathan replied. "Well, after he was dying ... so he doesn't sit there and bleed to death."
A jittery-looking Nathan also gave a glimpse as to why he might have wanted to kill MacNeil.
"I wanted him to honestly feel like -- take me seriously for a change. He just ... dismissed me," Nathan told the detectives.
But because of legal issues surrounding Nathan's Miranda rights, the confession was ruled inadmissible, meaning neither jury got to hear it.
After three days, the juries returned.
Nathan Gann was found guilty of first degree murder. But in a small victory for his defense, Nathan's jury decided that there was not enough evidence to prove that it was Nathan who pulled the trigger. He received a sentence of 25 years.
Brae Hansen was found guilty not only of first degree murder, but also of a gun charge and a special circumstance of "lying in wait." She was sentenced to life without parole.
Jurors told ABC News they were unanimous. For the MacNeils, the verdicts provided closure and a sense of justice served, but Timothy MacNeil's daughter Erin Ellison found she was still wrestling with her emotions about Brae.
"I mean ... I haven't even hugged her," Ellison said tearily to Fulginiti. "...I just wanted to go and just tell her ... I'll miss you, I'm mourning you, I'm mourning the loss of you as much as I'm mourning the loss of my dad..."
Brae told ABC News that she thinks about Timothy MacNeil all the time.
"...I believe that his spirit struggles on. And I do talk to him. And, um, I tell him how sorry I am and I ask for his forgiveness. And I tell him how much I still love him.
"If I could go back in time, I'd do it in ... less than a heartbeat. But I can't," Brae said.