Anne-Marie Green

They would need DNA testing and a forensic expert to confirm their suspicions that Bruno was lying.

But in the meantime, Corporal Nylon found a key piece of evidence that he says no one had ever examined.

Video and audio from the night of the shooting, recorded on a home security system.

Turns out that a security camera mounted on the front of the house had recorded Melissa Recuba's last words.

These are the final images of Melissa Recuba, recorded on this home security camera and this DVR.

Dan Nylon says when he first discovered the recording, he could see Melissa and her husband Bruno arriving home from their night out.

But it was difficult to make out most of what they were saying.

Greg Allen says that one thing was clear.

Allen says the original investigators told him they had no way to review the recording because they didn't have access to the necessary technology.

But Allen's team did, and could now see that the recording begins in the driveway, where you can hear the couple arguing.

But it doesn't seem to end there.

Once inside the house, it sounds like they're still arguing, says Allen.

The sound was just much harder to hear.

But with Bruno's changing stories and possible evidence of an argument, investigators were now treating Melissa Recuba's death as a possible murder.

Then Lackawanna County District Attorney Mark Powell agreed.

Because who would purposely shoot themselves in the hand?

Sure, sure.

With Powell's team now on board, Melissa's family was informed that the case was once again active.

Chelsea says she now had mixed feelings about her relationship with her father.

I live next door, so my son's very close with him.