>> yet i still have goals for myself because there are people who are better than me. and i will personally not stop until i reach my peak performance. >> reporter: nicole never came back. soon almost 1,000 volunteers were searching and authorities scoured for leads until they were able to track the last messages from nicole's phone leading them to eisenhower. >> the investigation led us to 18-year-old david e. eisenhower, a virginia tech student. >> reporter: with eisenhower in custody authorities soon locate nicole's body, 80 miles away in north carolina. it's about two miles from a home owned by his extended family. >> i'm sure that it's something nicole's family would like to know, why did she have to end up here, left in this condition, discarded in the manner she was? >> reporter: the investigation leading authorities to identify and arrest what they say is an accomplice, a friend and another student from virginia tech, natalie keepers, charged with helping eisenhower dispose of the body in these woods. >> i'm assuming that it was

probably done after dark and they may have thought they were further away from the road than they actually are. because there's no lighting out here. >> reporter: prosecutors allege keepers also helped eisenhower plan the gruesome murder, plotting for weeks, they say scouting locations, and even buying tools. when police showed up to talk to keepers, prosecutors say she immediately tried to warn eisenhower, texting him "police." it was then she allegedly told fbi investigators eisenhower killed noik ankle and put her body in his lexus, keepers allegedly saying she was excited to be a part of something secretive and special. >> that's really a stunning comment. there is a great deal of callousness about that. she and eisenhower discussed how the murder would be committed, cutting this little girl's throat, as though they're talking about an object. >> reporter: retired fbi profiler dr. mary ellen o'toole saying this is a complicated case with multiple motives spelling disaster. >> there's synergy that came together that made this a very

lethal pair. >> a very preliminary determination of the cause of death is stabbing. >> reporter: for nicole's mother, it's too much to bear. >> her favorite color was blue. nicole was a very loveable person. nicole touched many people throughout her short life. i can't do that part. >> reporter: while authorities wait for the results of an autopsy they have concluded that nicole was using a messaging app called kick to communicate with eisenhower, raising questions about possibly dangerous encounters. >> i'm willing to say kick is a devil for young children. it's like a free ability to text. anything you want. parents can't see the phone numbers that are coming in and out. >> reporter: experts say many of these anonymous apps are popular with teens and predators. >> you can sign up as anybody you want to be. it really becomes a private hunting preserve for some of these pedophiles.

>> reporter: here's how kik works. download the app for free, add any name and any photo, send messages, photos, and videos, and you don't even need texting service. >> parents sometimes take away these data plans thinking that, well, the child has abused it. but they only need a wi-fi signal to be able to communicate. >> reporter: abc reached out to kik who told us kik cooperated with the fbi for their investigation, kik cooperates with law enforcement to combat child predators anywhere in the world, even upon provision of a court order or emergency situations like this one. sorted by geographic location, by school, by age. how do you keep your family safe? >> the first thing parents need to do is set ground rules. secondly, know the technology, know how the parental controls work. third, they need to talk to their kids, have ongoing conversations about safety, so that kid when it comes time makes that safe and smart decision. >> reporter: and it's not just

kik. there are many other apps kids can use to hide things from their parents. blogger liz gambener showed david wright how easy it is to hide incriminating photos. >> when you open it up and i type in my password and hit the percentage sign it's a hidden photo album. >> reporter: sending photos as easy as point and click. kid swap the files in apps such as snapchat, kik, yik yak, whis per, making sharing large numbers of files fast and easy. >> kids will always be savvier than mom and dad, one step ahead of us, that's the nature of the game. >> reporter: nicole's friend carrie said she tried to tell an adult months ago after she noticed nicole was communicating with an older man. >> i went to the officer at my school. and wrote down his name on a piece of paper and handed it to him. >> reporter: the blacksburg police department denying she alerted the officer about eisenhower saying, had a student

or even nicole herself reached out to him in advance of her disappearance about anything that could cause concern, he would have act the on it through the appropriate channelschannel >> did you make this up? >> no. i think if he would have done something he could have seen the guys on her facebook and he could have stopped all of this. >> reporter: nicole's family filing into court wearing blue ribbons hour before her burial, mourning a daughter gone too soon. >> a preliminary hearing for eisenhower has been scheduled for march 28th. next, inside the super bowl of advertising. how madison avenue is rewriting the play bobook on how american enjoy the biggest sporting event of the year. counting down to tomorrow night's big gop debate right here on abc and the one thing you can count on seeing. ♪

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it's the nfl's biggest game of the year but it's also the highest-rated show on television, making the super bowl the perfect marriage of sports and media. this year's expected to generate, get this, $377 million in advertising revenue. and while the stakes are high for the teams on the field, they may be even higher for the teams and the ad agencies across america. abc's nick watt takes us inside some of the nation's most creative minds. >> reporter: sunday night there's one battle on the field -- >> caught for the touchdown! >> reporter: men in tight pants, hard helmets. off the field in commercial breaks there's another just as intense.

>> america has seen the light! >> and there's a butt in front of it! >> this behind the scenes battle is between women, men in beards and buns, working from industrial space, doodling. "madman" was then. >> this is the greatest advertising opportunity since the invention of cereal. >> reporter: this is now. in this battle deploying every weapon from amusing it girl -- >> it's not too big. like you could handle it. ♪ you used to call me on my cell phone ♪ >> reporter: to canadian rappers. >> these changes don't ruin the song at all. >> reporter: recently deceased rock stars. ♪ star man >> reporter: athletes. >> you're holding it upside down. >> really? >> reporter: ugly aliens. and septuagenarian celebrities with socks on their hands. >> there are those who expect

more. >> reporter: every slot costs roughly $4.8 million for the air time alone. it's up 75% in just the past 10 years. why? because over 110 million will watch sunday night. the highest-rated show on television. >> you're talking about an audience that is larger than any other audience out there. >> reporter: and then the bragging rights. >> i've never been a professional athlete but i know what it's like to be a professional marketer. raising the biggest game of the year. >> reporter: the way doritos does it, competition, a $1 million prize for the best amateur submissions which they air sunday night. here are two of the three finalists. me and the dog the stars in this one. >> the schtick is dogs like doritos too? >> exactly, everybody likes doritos. >> competing with huge ads created by mega companies, we don't have all that access, so we've got 30 seconds to make people relate and maim peek

laugh and remember it. >> relate, laugh, remember. >> yeah. >> reporter: for the ad-obsessed, youtube offers their ad blitz channel where fans can watch and vote on their favorite commercials. >> what is up, guys? >> reporter: videos from social stars like millennial ava gutowski part of the draw. >> it's about the concept. no matter if you're putting a ton of money mind it or one little blog camera, people are going to go to whatever they want to watch. >> reporter: the big dogs also leverage social media, leaking teasers, trailers, sometimes the actual commercials, online ahead of time. it's now the norm. >> when it comes to game day, if you've seen this commercial already you're going to say, wait a minute, everybody, stop, put your beers down, check this out. >> reporter: this is the david and goliath agency in l.a. >> doors will open to reveal the new optima -- >> reporter: we'll call them

team kia. their walken kia spot is already racking up hits on youtube. >> what is that? >> the new kia optima. >> reporter: in manhattan, team bud light airing their offering early online. >> so far, so good. on track i would say. >> america has seen the light! >> and there's a butt in front of it! >> reporter: now to deutsche in l.a. 2011, they intentionally leaked this gem for volkswagen. and set a trend. >> why put it out there before, why not keep it for the super bowl? >> we thought, if there's that much thruirst and hunger for th content, just give it to them, just lean into it. so that blew up huge. then the next year, everybody was doing that. >> reporter: but this year they are team taco bell. and taking a different tack. >> the toppings would stay in

better if we flipped it. >> it's become standard now for brands to drop their ads early. everything's out of the bag sometimes a week, two weeks before, you know, the spot even comes out. but this year taco bell and i think a lot of advertisers this year have chosen to hold back. i don't think as many people are showing everybody what they've done before super bowl sunday. >> you're holding it upside down. >> really? >> reporter: there are teasers. james harden really does not know what he's advertising. >> taco bell won't talk about the product they're launching until sunday. they won't show the commercial until sunday. everything's a mystery. >> i mean, how top secret can a taco bell product be? >> you can preorder the product, 700 people as of this morning preordered something they don't know what it is. >> that's genius advertising. you're selling something to people they don't know what it is. >> you don't know what it is but you already want to eat it. preorder now. >> do you know what it is? >> no idea. >> what can they do to a taco?

>> reporter: who wins this and arguably the bigger battle sunday night? it stands to critics, sales, social media reaction, and the looks on friends' faces. >> looking around the room seeing people -- >> yeah, yeah. >> if they're actually -- >> hey, nice, you did pretty good, that's great, brad. >> that's not good. >> not good, that's the fake one. then there's, "that was good!" that's the one i'm looking for. >> i've got something for you, girl. knowledge. anywhere you want it. >> reporter: i'm no stranger to the ad game. we made this for "nightline" a year or two ago. long story as to why. anyway. to get an idea how this multi-million dollar creative process begins, a challenge. >> i'm a very difficult client. we have a tv show called "nightline." you need to think of a super bowl commercial for our tv show. ideas, come on. you're all crazy people, throw them out. >> "nightline" is better than any other show? >> we are better at topical news but funny.

>> do you want to tug at the heart strings? >> no, i don't want any schmaltzy stuff. i want belly laughs. like smutty bell -- laughs. >> if you guys were the first to create an icon outside -- nontraditional icon, like maybe a talking cat. >> reporter: stay with me. >> do you have an enemy? >> james corden. >> seth meyers and james corden. >> so take down seth meyers. >> fall asleep to us instead. >> reporter: is they nowhere near as inspiring as christopher walken with a sock. here's why. >> as much as we'd probably love to come up with a great super bowl commercial for you for "nightline" right at the table today -- >> it would take eight, nine months. >> reporter: the goal of every agency is and forever has been to upstage this. the commercial that started all this super bowl commercial battle back in 1984. apple. can anyone trump it this year?

>> we shall prevail! >> reporter: schumer perhaps? >> that's why we're forming the bud light party. >> reporter: walken? >> pizzazz! >> war hawk, this is good! don't know really what it is! >> reporter: or whatever it is in that taco box. i'm nick watt for "nightline" in los angeles. next, counting down to the battle for the granite state. we'll have a preview of tomorrow night's final republican presidential debate right here at abc before tuesday's decisive new hampshire primary. (music) woman: i'll never remember all the projects, presentations, or meetings i gave up my nights for. (music's drums intensify) but days like this, i'll never forget. get out there, in the 2016 ford escape.

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finally tonight, the race for new hampshire and the stakes couldn't be higher in the republican contest. donald trump will be front and center for their final debate moderated by our own david muir and martha raddatz. giving us a sneak peek tonight. >> hey, good evening. the excitement is mounting here at st. anselm college in manchester, new hampshire, as our abc news crew is putting the finishing touches on our debate stage. top three candidates -- donald trump, ted cruz, marco rubio -- will be taking center stage here tomorrow night and if there's one thing we can count on it's some heated exchanges. all the candidates are gunning for momentum. just ahead of the crucial new hampshire primary on tuesday. everybody wants to make their mark, survive this debate, and move forward. but it may be the last chance for some. >> thank you, martha. martha and david muir will moderate that debate tomorrow

night at 8:00 eastern, 7:00 central time, right here on abc. it was former president george h.w. bush who said, if anyone tells you america's best days are behind her, they're looking the wrong way. thank you for watching abc news. tune into "good morning america" tomorrow. as always we're online on our "nightline" facebook page and abcnews.com. good night, america. have a good weekend. >> hey, everybody, i'm chris harrison. today should be a lot of fun, because we're playing with some old friends of mine from my other shows, "the bachelor" and "the bachelorette." and best of all, everything they win is going to charity. it's "bachelor" fan favorites week right here, on "who wants to be a millionaire." [cheers and applause] [dramatic music] ♪ hey everybody, i'm chris harrison welcome to the show. are you guys ready to play

"millionaire" today? [cheers and applause] me too. and this one is near and dear to my heart. america first fell in love with today's "bachelor" fan favorite on "the bachelorette," and he's been baking cookies and warming hearts ever since. playing for make-a-wish, southern nevada chapter today, from las vegas, please welcome marquel martin. [cheers and applause] what's up, brother? >> how you doing, chris. good to see you. >> good to see you. [cheers and applause] >> 's back. >> yes, sir. yes, sir. >> we obviously got to know and love you on andi's season of "the bachelorette." and that's where the--really, the moniker "the cookie monster" came from. >> that's right. >> we're going to dive into your past on "the bachelorette" and all that stuff, but first, most importantly, you're playing today for make-a-wish foundation, a charity i actually know a lot about and have worked with, incredible. how did you get involved? >> amazing, so with my current job at ufc partnerships, we did an event with make-a-wish, southern nevada chapter, and our

president had an event and made a kid's wish come true, and just being there with my company social cookie and just seeing the interaction from the employees and the smile on the kid's face when she met our president was just something that you hear about, but it's different when you actually see it and encounter it in real life, so just their genuineness and wholesomeness and what they stand for is amazing. >> it's a great organization. yeah, they do really special stuff. and when you see it firsthand, it's definitely life-changing. it's more for you than even the patients, right? it is a life-changing experience. >> absolutely. >> speaking of life-changing experiences, you came on "the bachelorette." everyone fell in love with you. then you came on the first season of "bachelor in paradise." >> right. >> you're still single. >> still single. >> marquel, come on. >> it's not for lack of trying, chris, i've got to say. >> it can't be. >> yeah, i think, you know, first off, "bachelorette" and

"bachelor in paradise" was a huge blessing and an experience, and i took a lot from it and grew a lot from it, and obviously, the cookie thing kind of took me by storm, and that's my love right now. that's my love, and that's why i'm single. >> yeah, the odd thing is, that whole thing really spawned into a business now. >> yeah, absolutely. >> i'm glad you're here, 'cause obviously you're here for a great organization. we're gonna have a good time today raising money for charity. >> i'm excited. >> so let me tell you what you're up against. 14 questions. the money value is growing from $500 all the way up to $1 million. [cheers and applause] every question you answer correctly moves you one step closer to that top prize. remember at any time you can walk away with the money you've earned up to that point. if you give me an incorrect answer, you walk with nothing, until you get to those thresholds, two of them, one at $5,000, then again at $50,000. also, you have your lifelines, 3 of them. you've got this audience that will help you out with one of the questions. "50/50," i'll take away two incorrect answers. you also have your plus one, which you have to tell me about. who's with you today to play? >> so, i wanted to bring

someone from make-a-wish himself, nicholas, great man. you know, i just want to make sure he's by my side when we get this million. >> part of the las vegas chapter of make-a-wish, welcome. nicholas, good to have you here. marquel, my friend, always good to have you here as well. >> thank you so much. thanks for having me. >> so let's do it. let's play "who want to be a millionaire." [dramatic musical flourish] ♪ all right, good luck. >> thank you. >> don't run. it all starts with your $500 question. the first time you open google maps on a smartphone, you'll probably be informed that the app would like to know what? >> i'd have to say the first thing that google maps would want to know is my location, so i'm gonna go c, your location. final answer. >> and just like that, you're on the board. well done. that's right.

>> yes. whew. they say the first one is the hardest. >> yeah, right? all right, second question is worth $1,000. here it is. what mel brooks classic had its 1974 premiere at burbank's pickwick drive-in theatre, offering free tickets to moviegoers arriving on horseback? >> based off the process of elimination, chris, it would "blazing saddles," so i'll go with d. that's my final answer. >> and that's also right. way to go. >> whew. >> classic movie. $1,000. you're doing good. relax. we're all good here. $2,000 question. in the latest quest for gender equality, an establishment called tallywackers recently opened in dallas as an alternative to what restaurant?