this is "nightline." tonight, the young woman who allegedly takes that revenge is a dish best served cold thing literally. look at this. college student accused of poisoning her friend's food and she's not the only one. tonight, these roommates from hell will have you watching your back. she's more than just a pretty face. tomorrow, we're with a rising star in the ring this olympic hopeful tells us how boxing turned her life around. and daddy girl. kendall jenner finally opening up about her father bruce. tonight, new scenes showing those first emotional moments as

he talks to his family about transitioning into life as a woman. but first, the "nightline 5." number one coming up i

ju good evening. if you've ever had a roommate, you know things can get tense at

times. what you're about to see goes way beyond that. a young woman who may go to prison for allegedly trying to poison her roommates and it's all caught on camera. it's just one of many such tales as abc shows us. >> she might be the roommate from hell especially if you're hungry. a university of south carolina student potentially facing a jail sentence after she was allegedly caught on camera contaminating her roommate's food. watch closely. here's 22-year-old hayley king peering into the fridge she shares. she opens a container of food and appears to spit in it multiple times. that's saliva. the secondickening act was captured in february. only being made public now. one of them claimed to have eaten food that just didn't have to farm-to-table taste.

the roommate said the incident followed weeks of arguments with king and a failed attempt to evict her. police say this is king spraying her roommate's food with windex. she even sets the food back on the counter and pours the ammonia-based solution over it before putting the food right back in the fridge. >> there's a clear law in south carolina that if you maliciously tamper with food with the intent to inflict bodily harm it's a felony. >> police brought king in for questioning and says she confessed to the incident. her attorney did not respond to the request for comment. king's roommates are keeping their identities hidden. one told abc news this not only affected me physically but also mentally from the anxiety that came along with it. king now facing possible felony

charges and jail time is currently out on $5,000 jail. >> her defense would likely be my intent wasn't to inflict bodily harm. my intent was to gross my roommates out. that may be wrong but it's not criminal. >> a bad roommate can be the stuff of horror movies. >> she's crazy. >> from the obsessed stalker in "single white female" to the deceiving and murderous college girl in "the roommate." but as we've seen such characters aren't only in the movies. they can be found in all kinds of places. >> over the top for everything. >> take portland oregon and a young woman with a taste for the finer things. >> lot of crop tops tight pants. >> woman who called herself v enjoyed life on the dance floor.

>> she liked to stir stuff up right? >> yeah. >> at first, these young women are drawn to her, a party time princess whose over the top attitude she could not be denied. >> i didn't even know the girl. it's like oh, my god, i love you. >> one by one, these women came to suspect that v was an identity thief. with this face liked sticking her pals with her bill. >> she was really good at telling her lies. she's a professional liar and a thief. >> $400 in unfamiliar charges turned up on her credit card. then on a shopping run v flashed big time cash. >> buying like $2,000 worth of bedroom and house stuff. she was going through her wallet there was so much money in there. >> only 24 hours later, when taylor checked her bedroom for

the money, did she have an idea where she had gotten all the cash. >> she stole my social security card debit cards and stole $13,000 cash. >> so right in front of you she was buying stuff with the money she'd stole from you 24 hours before? >> yeah, i knew it was her who had to have taken it. >> in days, she had gone from friend to frenimie. >> she's absolutely one. she is your friend and then absolutely your enemy. >> she also stole taylor's credit card. >> the detective picked up taylor's case in late august spearheading the investigation into the activities. >> she sought out a certain type of person. became friends with that person. and then would victimize them a little bit over time before doing something to cause her to cut ties with that person and leave. >> taylor went from victim to crime fighter.

a detective request setting up a facebook dedicated to finding v. a thousand miles to the south in los angeles, v's newest friends have grown suspicious of the club-hopping money-mooching young woman crashing on their couch. when they google her name they're flabbergasted by what they find. >> there's facebook pages dedicated to finding her. twitter accounts. i look at her and say, this girl is psycho. there's something wrong with her completely. so we called the cops. >> the detective tells taylor the news. the lapd has nabbed v. >> months of independent up emotions at last unleashed. >> we did it. i thought this wasn't going to happen.

i did it. i got her arrested. i can't believe it. >> pretty spectacular night, isn't it? >> you messed with the wrong girl. >> she took a plea deal and sentenced to six month notice jail and restitution for what she swiped. she's done her time and is currently on probation now that she's out of the cooler. for "nightline," chris connolly in new york. >> thanks to chris connolly for that story. do you have any roommate horror stories? you can tell us about them on the "nightline" facebook page. why would a professional model risk her money-making face by getting in the ring as an aspiring olympic boxer? plus how bruce jenner's daughters really reacted when he told them about his transition. about half of men over 40 have some degree of erectile dysfunction. well, viagra helps guys with ed get and keep an erection.

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okay. so if you thought the mayweather/pacquiao so-called fight of the century was a letdown, we're going to make it up tonight. these women get less money and a lot less attention than their male counterparts. something they're now fighting to change. here's rich l smith for our series pushing the limits. >> like most 24-year-old girls, mikaela mayer loves to accessorize. let's just say, i wouldn't borrow her gloves without asking. punches like these have made her a top contender for the u.s. olympic boxing team. and those knockout looks make a

former model a face of dr pepper. >> even fewer decide to put their face in front of someone who wants to rearrange it. >> she's facing one of the world's toughest fighters twice to keep her dreams of a gold medal alive. her and 17 of the best amateurs in the world are facing off at the tournament of champions. most have been on the road fighting nonstop for months all ramping up to the rio games next year. >> i don't know how you do it for that long. >> i think back when i first started boxing and doing the work my arms and shoulders would get so tired. now -- >> look at these bad boys. >> i know. >> she's a great fighter. they're all great fighters. she used to be a model. >> as it turns out, she was. for a little while. >> what was it about the lifestyle, being a model that was appealing to you?

>> i thought the idea sounded cool. people told me that's what i should do. they said oh, yeah, you'd be great at that. >> but at the same time, her life was taking a turn down a dark path. >> why were you kicked out of school? >> i was actually kicked out of school for getting in a fight with an ex-best friend. that's kind of a coincidence. i don't think i was that good of a model. i think i definitely make a better boxer. when i found boxing, i mean, i switched gears. it focused me. i stopped going out. i stopped partying. >> it seems that being in the ring is not about fighting and taking out anger, it's about discipline and technique. >> definitely. there's a bigger goal now. >> she's had to use both her brawn and her beauty. national ad campaigns and even a full spread have made her one of the faces of women's boxing. her endorsements netting her a

small six figure sum. a major lifeline with a top ranking amateur fighters make less than minimum wage from usa boxing. it's something this woman knows all too well. one of the best boxers in the world, she won an olympic gold medal when she was only 17. and is favored to win another. >> i've been boxing since i was 11 years old. i did not have a childhood. i couldn't go to the beach. i didn't get to hang out with friends. >> but sponsors haven't been beating down her door. >> i just want an endorsement. >> she says she doesn't like that female fighters have to show skin to get paid. >> i'm not going to sell my body. i feel like i'm selling enough. >> do people care about what the men look like outside of the ring in comparison to what they care the women looking like? >> should looks matter no, they shouldn't matter. how you fight in the ring your

performance and skill is all that should matter. the truth of the fact is that you know it does matter. >> and another harsh reality, it's the men, mayweather and pacquiao ring a bell? who pack away the big purses in the pros too. >> a typical championship fight for a woman professional she'd make about $5,000 still. 2015. a man professional for a championship fight, he's going to make hundreds of thousands and potentially millions of dollars. >> doesn't really seem fair there? >> right. big disparity. >> something that the women of boxing with hoping they can knock out together. >> i do believe i'm going to get a chance to headline in vegas. you got to be a woman that everybody wants to see fighting. >> she came out of nowhere. who's this girl. who's this 17-year-old. then she comes on wins a medal, okay. >> i think the first memory i have of her is so funny.

>> don't say that. >> no she did so good at the end. but she had like really close fights. she did so good. after she got done she was like i'm going to go drink now. >> most of their time is spent right here in the gym three times a day six days a week. >> in the gym already. ♪ >> to keep their competitive edge. >> my boxing workouts are more mentally draining than physically. >> but when the gloves really come off -- >> yeah, right. >> -- in the rooms where they bunk together, sometimes with the girl they're trying to beat. >> she's the worst. they'll come to clean the bathroom and give us new towels. then by the evening when i go take a shower, all the towels

have been used and they're on her side of the room. >> it's replaced by playful teasing. you're not in the same weight class? >> me and her. >> and you've had to room together? >> not during competition. >> not during when we had to fight each other. >> seems easier to be living and rooming with your teammates but rooming and living with your competitors seems a little more difficult. >> we're frenemies. >> do you feel like you have real true authentic friendships or is it seemingly a friendship because you want to keep your enemy closer? >> we have a true friendship. we've always been cool to each other before and after competition. it's never been, i hate you. >> it's 7:00 a.m. on the final fight day time for the prefight physical. checking them for injuries and to make sure they made weight.

they haven't eaten in hours. if she weighs more than 132 pounds she's out. it's time to take the ring. each woman prepares in her own way. ♪ >> 18 women, nine fights with everyone leading them closer. or further away from their ultimate goal. in the final round no signs of that self-proclaimed girly girl. mikaela comes out swinging with everything she's got. clarisa dominates her opponent. >> the winner in the red corner!

>> both women are one jab crossing closer to their olympic dreams and hoping each friend will pave the way for the next girl with a great upper cut. >> all these girls here are pioneers of the sport. we don't realize it now, but this is the beginning. the olympics is only going to help women's boxing to grow even more. >> i'm rachel smith hitting the heavy bag in atlanta. >> lean, mean, fighting machine. up next intimate video of bruce and kendall jenner negotiating their sensitive new faelt reality. talking with his model daughter about his new life as a woman. >> announcer: abc news "nightline," brought to you by geico.

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turn to keeping up with the kardashians for cultural issues, but new video out "tonight show"s this celebrity family navigating a sensitive new reality. >> i couldn't ask for a better dad. like, he taught me how to ride a bike and be the tomboy that i am. >> today, a first glimpse into the intimate moments, reacting to his bombshell news he is transitioning into life as a woman. >> your feet are actually way more feminine than i ever would have imagined. >> they came out pretty good. >> sneak peeks from e's up

coming segment about bruce. >> they all cried mainly because they don't want anybody to hurt dad. >> jenner telling us the kids' reactions all varied and human. >> kimberly has been by far the most accepting. >> what's the most interesting thing she said to you about it? >> well, you got to rock it, baby. you got to look good. >> these intimate moments of empathy and pain a rare sight in a reality show built on shopping and selfies. but it's still painful for ex-wife kris jenner. this clip from the up coming special. >> i have these memories of this life and i feel sometimes like it didn't exist. >> now all eyes on the future of this very modern family keeping up with the kardashians, a taller order than ever. rnlts we want to thank you for

watching abc news tonight. tune into gma first thing in the morning. we're online 24/7 at abc news.com. thanks again for watching and good night. tomorrow one on one with hugh jackman. he opens up about his health scare. he reveals what's next on abc's world news tonight. dude totino's blasted rolls. sweet. totino's blasted crust rolls... flavor at full blast you say avocado old el paso says... zesty chicken and avocado tacos in our stand 'n stuff tortillas . (record scratch) you say stand n' stuff tortillas old el paso says...

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