somebody reporting they saw a white van and a man slapping a woman. police responded. they put on bodycam. we saw the video. it shows gabby crying, brian showing them scratches on his hands. what police did that night was just separate the two of them. they said they didn't think they needed to do more. they separated them. we learned that two national park officers responded to the same call. one of them was a woman. she told a utah newspaper that she told gabby she believed that relationship was toxic and that she might want to re-evaluate. we know within a couple of weeks after that stop, gabby was dead. >> appreciate it. thank you. with us tonight, john walsh, host of "in pursuit," it airs wednesday 10:00 p.m. on investigation discovery. john, what do you make of this fbi arrest warrant for brian? to what extent could that increase the chances authorities find him? it gives them a reason to really