As most New Yorkers are just beginning their day.

Oh, what a way to end the day.

We're looking for a fellow that's wanted for connection with the rape.

NYPD Detective Sergeant Wally Zines...

I'm leaving a uniform cop at the door to secure it for a search warrant.

Is usually ending his night shift.

It's almost 7.30, half hour to the end.

And hopefully, uh, it'll be quiet, get some sleep.

But at 751, on October 19th, police operate away of emergency.

Detective Zines is about to start working overtime.

There's a shotgun.

Heavy up! He's coming to get the girl!

I receive a call from our citywide duty captain,

and he said, why don't you start to roll?

Operator, there's a lady outside my door, she's in trouble.

The lady's shot, she's completing.

Wally rushes to the scene in residential Queens.

So does our 48 hours crew, which has been granted unprecedented access by the NYPD.

Guys, please with me, boss. An extraordinary life and death drama is about to unfold before your eyes.

Where's the guy who'd gone?

He went back in the house. He hasn't come out yet.

There was a male who shot three people and barricaded himself in the house with hostages.

...