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Previously on Bardstown.

He said in an interview somewhere or something that he didn't feel welcome.

And even if he wasn't comfortable searching with us, if that was the mother to your child, someone you're supposed to love,

wouldn't you get up your own search and go search to wherever you think she was at? I never understood that.

Crystal Rogers disappeared on July 3rd, 2015. It was two years after Bardstown police officer Jason Ellis was killed, 15 months after the murder of Kathy and Samantha Netherland.

10 days after she vanishes, the reward for finding Crystal reaches more than $70,000.

And Brooks Hauke, Crystal's boyfriend and father of her youngest son, speaks publicly for the first time with Nancy Grace.

I'm 100% completely innocent in this. I want the emphasis to remain on Crystal State Return.

But Brooks Hauke is about to do a lot more talking.

I've taken 17 years in my life and I feel like I've gotten worked hard to get a good education.

I've worked hard all these years. I've built a nice life for me and my family.

And now my hope and family's name is trashed for something that's completely not even tied to me. That's where I'm at right now.

I'm Shay McHallister. This is Bardstown.

We love you. And we're never going to give up. We're going to keep Sergeant and we'll take care of your kids and she knows we would do that.

The FBI joins the search of two lakes, including four agents and a dive team. After search dogs pick up on something.

Then Deputy Sheriff Ray Penoroa is hoping for leads.

We're searching this body of water because there was an interest with some canines and we're following up on it.

We're actually running sonar and we'll be out here today and hopefully locate something or get us a lead.

Four days after she vanishes on July 8, 2015, Nelson County Detective John Snow sits down with Crystal's boyfriend, Brooks Hauke.

The conversation lasts for about 90 minutes. Brooks tells Detective Snow just what he told Crystal's mom Sherry Ballard about his last hours with Crystal.

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