destination from the airport all the way up to north salt lake address and she was dropped off at hatch park in north salt lake, just before 3 am. >> a park? at 3 am? why would mackenzie come here? and just as important, why would a driver leave a young woman alone, burdened with luggage, at a park in the middle of the night? who would do such a thing? it was detective sayes job to track down the driver. who she discovered, was not so easy to find. >> we were like, is this guy dodging us? >> coming up -- mackenzie's friends have a terrifying theory about why she's missing. >> i assumed that the lyft driver abducted her. >> and here's one reason why. >> her last text message that we recovered was at 2:58, prior to her arrival arriving at the hatch park location. and that was the last activity ever we had on her phone. >> when "dateline" continues. with less moderate-to-severe eczema, why hide your skin if you can help heal your skin from within? hide my skin? not me. dupixent helps keep you one step ahead of eczema, with clearer skin and less itch. serious allergic reactions can occur that ca

little thing prosecutable i mean i get why you know kellyanne conway running up you know hatch violate like parking tickets is not you know getting the prime attention of the justice department. i mean there are these sort of line stepping instances with every administration a bit. i don't know, it just i think it's pretty blatant. so whatever he's done in his past i mean, i hope someone's taking a look at it. so yeah. yeah. thank you for writing your book. thank you. i think i heard correctly that you said at one point that he could have been stopped. i think so. and, you know, as i read your book and i'm not quite finished with it, but it just seems to me this all the characters you're writing about come on singly and i mean, mccarthy went up to the michael mccarthy something. graham did they come on as individuals? yeah. so just thinking about it seems to me he he could have been stopped only people joined forces. absolutely. now, what were you thinking, though? what was i thinking. yeah. that he could have been stopped. i think he could have been stopped. well, okay. i think he could have been