In the seventh precinct, there's a sign pinned on a court board with a quote that says

he escapes who was not pursued.

But it turns out that sometimes those who are pursued still escape.

So this is your last tip.

There are people out there that know about this homicide.

I've talked to them, but nobody has the information to give us.

I don't know, I'm really really starting to hit some serious dead ends.

Hello, you have one new voice message.

The paper's data.

I'm just frustrated with the way this whole case has been like forever.

13 years after Berkobrine was murdered, I got a call from Detective Kenny Sylvia.

Well, I'm willing to stand in sort of lever and take my lungs.

I want to do what I think is necessary and with it.

I'm just saying that needs to get shaken up, take the letters out there and define justice for Berkobrine.

Kenny and I kept in touch, and we still talked about the O'Brien case from time to time.

But this was not the call I expected.

Kenny asked me if I would consider doing another report on the case.

He thought getting the story in the news again would be the only way that Perkskiller would

ever be caught.

I had thought about this case a lot over the years.

But we agreed that we needed to get Rory and the rest of the O'Brien family on board first.

For ABC News, I'm Christina Kylie.

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