A shooting in New York is a daily occurrence-unless it's an upscale elderly woman in a high-end car. Then maybe not daily...

Nash is taking care of other business, like presenting a class at Quantico for Women in Federal Law Enforcement group members. The lessons taught take on extra meaning when another killing is brought up.

This one is rural in Upstate New York.

And it wasn't a hunting accident.

But this is just the next domino to fall.

As Nash and Muna rush to gather information, two more kills happen in the Midwest. Both have the same traits if you know what to look for.

Now it's a race to find the sharpshooter before...