Special Agent Dustin Henningsen

You leave no building unchecked.

Obviously, we're going to throw every resource that we have at our disposal to apprehending him.

We had received word that there was a 911 call in the morning.

Tell me about that 911 call.

It's essentially that you're listening to the end of her life on the 911 call.

Chris Pritchard, her estranged husband.

As the dispatcher continues to ask, what's your emergency?

You can faintly hear somebody say...

You guys ready to go?

It was a very violent scene.

As we continue to work the investigation, we began to establish our timeline.

You can hear dogs start to bark.

We had determined that was most likely the point when he arrived at the kennels.

The first video that they really got was Angela coming down to work in the morning.

And right up here, you're going to see Angela start to pull down to the entrance at the Mississippi Ridge boarding kennels.

pulling up to the kennel at 7.34.

You can see her get out of her vehicle and she's gathering her belongings and then walking into the kennel itself.

At 7.39 and 43 seconds, we hear a gunshot go off in the video.

Actually walking from the kennel area down to the fence area here behind me.

That makes us believe that this is the first area that we need to check.