Anne-Marie Green

Sitting on the mattress still stained with his wife's blood, Bruno tried to show them what happened.

Earlier, investigators had gone through the house shooting video of the scene and collecting evidence and didn't note any signs of a struggle.

Hospital staff found no other injuries on Melissa, and Bruno said they had been getting along just fine.

Jack Wilczewski and his wife Tanya were out to dinner with Bruno and Melissa that evening, and he says everything seemed fine.

No arguing?

The day after the shooting, Bruno agreed to a polygraph exam.

According to police records, the results were inconclusive.

Worried about her father, Chelsea says she suggested he speak with attorney Joe D'Andrea.

Did you wonder why he was calling you?

Melissa spent several days in intensive care.

Three days after the shooting, Melissa's family made the agonizing decision to take her off life support.

We knew she was suffering.

It was August 10, 2013, at 1.45 a.m., when Melissa passed away.

Joanne says they were all in shock.

And even though no one in the family wanted to believe Bruno had deliberately shot Melissa, they were surprised when he was never arrested.

Joe D'Andrea says the district attorney's office felt they didn't have enough evidence to charge Bruno with murder and decided not to charge him at all.

Melissa's death certificate listed her cause of death as a gunshot wound to the head.

The manner of death was left pending.

No one said to you, we've concluded it was an accident?

No, it was just still an open, open case.