It was nearly a year into my investigation, and given what I've now learned, it was time

to contact the family of the victim, George Colazzo.

It's really a tough thing to do, especially when I'm going to bring up information they

might not want to hear.

But they have a right to know what I'm up to, and I need to find out more information

about George Colazzo.

I find one of George's sisters living in North Carolina.

I send her an email and then give her a call.

It's Dan Slepian, how are you?

She's hesitant to talk on the phone, but says she'll be in New York in a few months and

would rather meet then.

So we said a date.

I had no idea the curveball that was coming.

I'm Dan Slepian, and this is 13 Alibis.

In the spring of 2015, Juanica Colazzo, Georgia's sister, came by NBC News where we met

in a conference room.

Juanica is kind and polite.

But I can tell she isn't exactly thrilled to meet with me.

She seems compelled to be here, but clearly doesn't want to be here.

She starts telling me about George and how she adored her little brother, and she's here

to make sure someone speaks for him.

So you brought a picture of George.

...