you think shark tank is brutal, wait until you see this. >> on an all-new "20/20," the people next door. when a tiff over property lines turns to battle lines. >> and -- full-scare war fare. >> why don't you grow up. >> how did they end up wearing cameras? border wars. >> and, could you live next door to party central? >> every been under siege?

that's what it's like. >> a vietnam vet versus the berkeley frat boys next door. >> sigma alpha why? and when the friendship goes down -- a fence goes up. that's more like the berlin wall. >> they started painting pictures of pigs on the walls. >> but that's just for starters. >> what is this? >> find out when you meet the people next door. here now, david muir and elizabeth vargas. >> good evening, and happy new year. david is away tonight. we look at neighbors tonight that aren't making resolutions to be nice to each other. starting with the people next

door with serious boundary issues. here's tom llamas. >> reporter: why can't we all just get along? of all the kinds of neighbor disputes, there's nothing like a good border war. tonight, two tales of terrifying border territoriality. first, from the historic hudson river, a call for help. >> they say they have the mother of all neighbor disputes. >> we've had quite a bit of trouble with the neighbors. >> and this is the entryway of your mystery? >> yes, please follow me into my secret garden. >> reporter: liz ennis is in a blow-torch hot battle with her

neighbors. >> this is my property! >> reporter: if nothing else, the 65 security videos on youtube reveal clashing lifestyles. the jagers are martha stewart-style neat-niks. while, here, judge for yourself. maybe he thinks your backyard is a mess. >> we've been spending money on his lawsuits. >> reporter: you don't have any money left to clean up. >> oh, no. >> reporter: and the first salvo comes when they accuse yeager of aggressive lawn mowing. then, the ennis' say they became chronic, petty complainers.

>> derelict cars, lights, birds, ve vermin. >> reporter: but it turned to all-out war when the jagers hired a surveyor that said the deed to the ennis property is wrong. then, d.-day. jager builds a fence across who she considers her land. nothing says i hate you like an eight-foot, $5,000 hardwood fence. especially when it's being used as an attack foundation to drown out your neighbor's barbecue with a hose. they sued them twice.

>> i said, does it suck to wake up and find out you're still you? >> reporter: but judges said the fence and property line is fine. but they reluctantly told us their side of the story. >> we asked to settle it between the two surveyors. >> reporter: they say it's liz that's unreasonable and a nuisance. >> she killed all the grass, putting the logs down in disputed property. >> how do you like that? >> it's like a tennis court. >> reporter: time to find out what the ennis family has to say. they showed us some interesting photos. were you shining spotlights to

harass them? >> no. >> reporter: she also denied killing the grass. who's in the right? we'll find out shortly. but first, another report of a neighbor from hell. >> this just in at neighbors from hell.com headquarters. from cooperstown, new york. they say they have a shocking neighbor from hell story. >> reporter: they haveeen in a very bad neighbor dispute. >> says here they attempted to steal their land. they had to film him. sounds like this is when the real trouble started. >> this is real imaginative. putting up no trespassing signs. >> reporter: they say he's the neighbor from hell. >> this is your house over

there? >> reporter: their house sits on 12 scenic acres, and gene ellis sits on more than 50. >> it's completely secluded. >> reporter: but you found a reason to fight. >> he needed more of our lands. >> reporter: it all started because they say his driveway crossed the sliver of her land. for eight years, you guys fought over this space right here. >> he never asked permission. >> reporter: they installed security cameras to document ellis, and he started snapping pictures back. >> i'm on my own land. someone is taking pictures of me. you've been nothing but the best neighbor to us. let me tell you. >> come right up to here with

cameras and yelling things. >> reporter: paul and catherine say that ellis was harassing them and trespassing on their tr property. >> you are the worst neighbor that has ever existed. >> why don't you grow up? >> reporter: but things don't get really interesting until they take their videos to the district attorney. pleading with him to do something. when we come back, he does. but you won't believe who ends up in handcuffs. >> when we come back, the border wars hit defcon 3. plus, a chain saw maskmassacre.

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"20/20" continues with the people next door. >> reporter: there are some tried and true strategies in a border war with neighbors. you can build a fence, file a lawsuit, or fire up your trusty chain saw. now, that's a game changer. her backdoor neighbor put up a fence on what she considers her property. after her legal efforts failed, she turned to more direct action. figuring the best defense is no fence. >> when you heard the buzzing of the chain saw? >> the angels sang. >> reporter: as it buzzes, we wonder how does it get to this point? >> people will reach up to me, and they wind up being the

neighbor from hell themselves. >> reporter: what did you think? >> we were very upset. >> reporter: they sued, and settled, but neither side is admitting to wrong doing. today, the fence has since been mended. you don't think they're going to do anything else to your fence? >> well, they step on my property, they'll probably get arrested. >> reporter: and liz says she's not done fighting. >> i'm not done trying to retrieve my property, no. >> reporter: you think you were a good neighbor? >> no, in the end, i was not nice to him anymore than he was nice to us. >> reporter: do good fences make good neighbors? >> no, my cameras made good

neighbors. my fences didn't do nothing. >> reporter: meanwhile, in new york, they're battling over where his driveway begins and where his property begins. paul and catherine sued and settled. gene ellis agreed to move his driveway off their property. case closed, right? wrong. because paul and catherine kept their cameras rolling. what's that over there? >> that's one of our cameras. satellite information is encoded on them so you can track exactly where you've been on the internet. >> reporter: what was that like, being on your own sick reality show? >> it was like being on a

reality show. paul and catherine and gene, all starring in an eight-year-long saga. in this scene, gene comes cruising through their woods like bigfoot on a bulldozer. >> he bulldozed the creek flat so he could have a pathway here. >> reporter: was that illegal? >> he did get arrested for that. >> reporter: he continued to harass them, calling the police on them numerous times. >> we're on a public road. leave us alone. >> you want to call the police with more lies?

go ahead. >> reporter: just listen to this tense phone call from the d.a. >> he was walking around on our property. if you're not going uphold a court order, what kind of d.a. are you? >> i'm glad i don't have neighbors like you. you're acting like 10-year-olds. >> reporter: no crime committed? >> nothing. >> reporter: he says the videos were more revealing than they realized. >> it showed them committing a crime against him with all the videos. it was the best evidence against themselves. >> reporter: the d.a. finally did take action. but not the action they expected. >> they were arrested when we

had independent evidence that they were following him around and taking pictures of him. >> reporter: state police arrested paul and catherine. charged with stalking gene ellis. >> every shred of evidence they gave me was against themselves. >> reporter: the case was dismissed by a judge, proving, they say, that the charges were trumped up and built up exclusively on statements from ellis' friends and relatives. they say there was a conspiracy by you and the ellis and the ellis' friends. do you think it became obsessive?

>> yes. >> reporter: and ellis declined to talk to us on camera. you were documenting every second of your life. is that obsessive >> it's the logical thing to do. >> reporter: but gene ellis moved, but now they have to move because of paul's work. >> have they been resolved ever? yes, but it's going to take a lot of time, money, and anguish in a lot of cases. so, if you want to take care of it, it's the "m" word, move. >> reporter: looking back over eight years, the videotaping, fights with police. was it worth it? >> without a doubt.

it was worth it, because it ended up being more a fight about justice. >> he was a bully. that was the issue for us. >> when it comes to the neighbor from hell, we won the powerball lottery. >> so, who was the worst bully? let us know. use #abc2020. next, how would you like this for your scenic view? from booze to butts to butting heads, one man's crusade against the frat next door. when we come back.

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hundreds of calls to the police. $60,000 spend in surveillance equipment and cameras. must be for one of america's worst crime zones, right? no, just cracking down on the frat boys next door. here's adity roy.

>> reporter: a crash course in the perils of binge drinking. an armada of ambulances carting off the premises. startling images from our san francisco station, kgo. now, imagine you weren't just watching this on tv. you were living it. your house, on the edge of berkeley's fraternity row. >> if you have been under siege, that's what it was like. >> reporter: paul's weapon of choice? >> you better put cameras up. >> reporter: more than $60,000 of surveillance gear, he put

together enough footage for a documentary. >> throwing 1.75 bottles at our house. she bends to get her keys, just pulled a full moon. >> reporter: these are probably not scenes you like to witness on your street. >> there we go. you can see the two guys naked, running up the street. this gentleman here, he's going to drop his pants. and sticks his hands in his pants. >> reporter: but how did it come to this? he was a firefighter and emt.

then he and his wife moved to this 1927 dutch colonial back in berkeley. >> my wife always wanted to move back to her grandmother's house. >> reporter: but he was gambling from the start. this street, just one block from the university of california's campus. and their house right between two frat houses. why did you decide to move into this house? >> when we first moved here, things were actually pretty good. we were invited to the monday night lobster and steak dinners. >> reporter: that was then. this is now. why the change? paul says with the explosion of cell phones and social media, the gatherings have ballooned from 50 people to more than 500. >> it was becoming more

outrageous. >> reporter: he measured the noise levels from his yard. >> started at 11:00 p.m. it's now 5:30 a.m. they were going until 3:00, 4:00, 5:00 in the morning. you can see she's naked from the waist down. they put a blanket around her. >> reporter: and drunken brawls outside his house. he started complaining about the loud parties. his garbage cans knocked over. kids throwing things. and throwing up. and he says that's when things got personal. you had furniture thrown from up there. he called police, and some of

the neighbors broke into his home. he says he's even taped them threatening his life. >> [ bleep ] [ bleep ] [ bleep ]. >> reporter: you had death threats? >> yes. >> reporter: how many? >> too many to count. windows shot out. people saying, we're going to burn your house down. >> reporter: his lawyer showed us this long list of police calls about berkeley frats. she says, an average of 400 a year. looking at the number of times, it doesn't seem like a light touch. >> well, there are no arrests. no one is taken to jail. >> reporter: when he's called berkeley police, he says they responded, but the parties haven't stopped.

>> we're not getting any help from the university or authorities. >> you can't have authorities says, they're breaking the law, but it's going to keep happening. take a hike. >> reporter: "20/20" reached out to place, and they say they take all concerns seriously. and a health official tells "20/20" they worked with them on safety issues and stripped them if they have too many violations. but that's not enough. he points to a recent death of a visiting student at a nearby party. the cause, alcohol poisoning. the frat was stripped of official recognition in 2010, but it remains active.

now, full disclosure, i graduated from berkeley. and i have a personal interest in what students think. >> i don't feel bad, because if it's worth it to live here, you have to put up with the noise. >> reporter: what was it like to live next door to a fraternity? >> it feels uncomfortable when you're trying to concentrate. most of the time, it was the same as trying to live anywhere else. >> living on frat row is a conscious decision. >> reporter: finally, paul moved out. but he kept his cameras rolling, and files a lawsuit against almost anyone connected to the neighbor dispute.

including 34 of berkeley fraternitie fraternities. >> our goal, to have some civility in this neighborhood. >> reporter: his original lawsuit was dismissed but it's going forward, and he keeps fighting and taping, hoping he and his wife can someday come home. >> i'm strong enough to keep going because i feel so strongly about this problem. >> so, should he sell the house? or should police take a tougher line? let us know your thoughts. use #abc2020. we'll be right back. next, a 12-foot-tall fence was bad enough. but covering it with pig

pictures? >> what did you think? >> i thought they were calling us pigs. >> when we return. homeowners to tell that are sixty-two and older about a great way to live a better retirement... it's called a reverse mortgage. call right now to receive your free dvd and booklet with no obligation. it answers questions like... how a reverse mortgage works, how much you qualify for, the ways to receive your money...and more. plus, when you call now, you'll get this magnifier with led light absolutely free! when you call the experts at one reverse mortgage today, you'll learn the benefits of a government-insured reverse mortgage. it will eliminate your monthly mortgage payments and give you tax-free cash from the equity in your home and here's the best part... you still own your home. take control of your retirement today! call to get your free information booklet.

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they say that good fences make good neighbors. but in this story, good fences make big fights. turning former friends into enemies. the story, with trees and a juice machine. ryan smith went to the leone str state to get the story. >> reporter: this begins in san antonio at this wedding, a backyard affair. there he is celebrating. >> we were very close. we went on vacations with them. >> reporter: back then, it was nothing to share meals with the

mart martinezes. b >> this has been two years and three months. and it's still going on. >> reporter: it's a knock-down, drag-out spat that made bitter enemies of those former friends. it happened online, when they clicked the unfriend button. why? it's all mixed up like food and vegetables in a juicer like this. >> we did a thing like juicing. it's real healthy for you. she had posted that they weren't into the juice scene. >> reporter: but the neighbors disagree. the posts are long gone, but

there's no doubt that they claim was written squeezed the life out of their friendship. >> they said it gave us diarrhea. >> reporter: it juiced up the tension already simmering over this man, another neighbor feuding with rick over trees. when you saw that neighbor having problems with rick, what did you do? >> i intervened. >> reporter: leading to the wall. they created what today is sort of the berlin wall of san antonio. a fence build by yolanda's husband. a nearly 12-foot behemoth.

and forth. it's a monument to family hatred. >> at the center is this 12-foot-high corrugated metal fence. >> reporter: and one big headache for the cops. >> we're back and forth, over and over again. >> reporter: and for the most part, what they do isn't against the laws. but it makes you think about the laws. knocking down garbage cans with what he thinks is a cattle prod. yolanda denies her family owns a cattle prod and says it's nothing compared to what he did to them. it's not so scenic on yolanda's

side. >> he started painting pictures of pigs on the walls. >> reporter: what did you think when you saw those? >> i think they were calling us pigs. >> reporter: first, a pig, then a donut, then a stuffed pig on a pole. then, what is this? we can't show it, but she says it's a stuffed pig in a simulat simulated sex act. is he trying to taunt you? >> i don't know. >> reporter: rick says he's responding to a camera 13 feet high that violated his privacy. >> i was trying to prove a point. >> reporter: well, it makes you look vulgar. >> tell them to stop taping us in our pool. >> reporter: rick runs a surveillance business out of his home. and as the accusations

escalated, the bride claimed she was being violated. >> we were being watched 24/7. >> every time we were outside, he was harassing us. >> reporter: how was he harassing you? >> he would start making pig noises. >> reporter: pig noises? yup, just like these he added and posted on youtube. once you get to that point, making pig sounds to harass your neighbors, you're emerging as the neighbor from hell. >> it's hard to be the strong one, the rock to try to keep the family together. >> reporter: especially after the garbage can incident. it was bound to boil over, and

last january 13th, it got physical. yolanda's daughter and rick on a collision course with a trash can. watch again. >> knocks her down. she had scrapes on her legs. he starts mocking her. >> reporter: go next door, and it's a different view. seeing this from this pe perspecti perspective, it tells a different story. it led to charges against rick, and pled no contest. but could any training prepare him for yolanda's retaliation against his security cameras?

what did you think? >> i was shocked. >> reporter: he's referring to the yard sign. >> they put up a sign that said perverts next door. some of your clients questioning, why is this sign there? >> reporter: they just put it back up. and each family filed dueling lawsuits. and a judge has ordered both families to stop everything. but can any ruling help everything get back to normal? >> if i was their neighbor, you would be interviewing me in prison. >> and by the way, there's a huge feud going on. that's not exactly a selling

point. >> i would say, we're going to get together, laugh aftt ourselves. we've got to get this enemy stuff behind us. >> reporter: but that wasn't enough to get these folks on board. the holiday season, maybe you go over with a wreath, can we make this right? >> if you live in a fantasy world, that would work. >> reporter: so, they're the ones that need to change. >> they need to change. >> reporter: do you think going over there, giving them a hug, saying how can we get past this? >> no. >> reporter: these are people that used to be your friends. >> but they can also be people that you don't want as an enemy. coming up, when your neighbor is a pig, literally. they're bringing home the bacon, and keeping it to love.

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"20/20" continues with the people next door. here's debra roberts. >> reporter: in the quiet in virginia, a lone pig is making o noise and news. >> breaking news about the fate of tucker the pig. >> reporter: he's the pork that's splitting this community apart. on one side, the residents. and others that don't want to see him turn the community into a pig sty. what does he do? >> everything a dog would do. >> reporter: her allergies

wouldn't allow her a dog. so, they got a pig. he's treated like royalty, taken for drives, getting beauty sleep. >> pigs sleep 16 to 18 hours a day. >> reporter: i don't smell anything that indicates there's a pig in the house. do you work overtime to keep him clean? >> he gets bathed every two weeks, and he gets lotion because he does get dry skin. >> reporter: tucker plays with kids of all ages. everyone loved him until the day someone didn't. when did this story take a dark turn? >> an officer came to our house

and said there was a complaint and said i had ten days to get rid of him. >> reporter: the property wasn't zoned for livestock, so they tried to get a conditional use permit. >> they're worried about setting precedent. if they give us a special permit, what is next. >> reporter: it has a reputation of one of the best places to live in america. and some locals think they may soon be living next to a designated farm. >> they've gotten bad. it's to the point where i could call it bullying. >> reporter: this fall has not been kind to pig owners. a woman was thrown off of a

flight when her pig caused a problem. and this woman, researching and finding he was considered acceptable pet, some of the community complained, saying he was causing too much of a mess, and causing problems with property values. >> she got a petition and tried to get the neighbors to sign it. nobody signed it. >> reporter: and the fight went all the way to the city council. >> i am the reason we're wasting our time talking about the pig. >> reporter: yes, you can have a pig in little rock. but you need a 300-foot buffer of land between your neighbors. facing eviction, suey is now

suing. they're heading to federal court. back in virginia, the johnson are waging their own battle at a meeting of county supervisors. >> i think it will be very difficult to grant this, and deny someone else. >> please deny this appeal. >> reporter: when mark johnson gets up to speak, he makes an admission. >> i am a man with a psychological disability. i had my son take his last breath in my arms. it was tragic for my family, and having pets can help teach different coping mechanisms. >> reporter: mark says his

entire family has been comfo comforted, but he needs him the most. >> he helps me and consoles me. >> reporter: it's not as strange as it may sound. she says her pig helped her with depression. critics find the timing of it a bit suspicious. >> the pig is more than a pet. now it's an emotional support animal. has this been diagnosed in the last 30 days? >> reporter: is it just a ploy to keep tucker? >> it's not a ploy. and there's no reason he can't be a good pet. >> reporter: the johnson say their neighbors best get used to the new kid on the block.

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they were born online, and built to save money, which means when they save, you save. because that's how it should work in the modern world. esurance. backed by allstate. click or call. i to the acidity in any foods.ht never thought about the coffee i was drinking having acids. it never dawned on me that it could hurt your teeth. he told me to use pronamel. it's going to help protect the enamel in your teeth. it allows me to continue to drink my coffee, and it was a real easy switch to make. as we say good night, we want to hear from you. if you have a personal story you want to see on the air, let us know. go to our "20/20" web page to find out how. thank you for watching. i'm elizabeth vargas. for david muir and all of us at "20/20," have a great new year.

>> clear skies and cold temperatures. >> the freeze warning and how temperatures. >> the freeze warning and how long it will stay gotten something that's been oout of reach for far too long.e health insurance. how? they enrolled through covered california. it's the health insurance marketplace where you'll find a range of plans from leading health insurance companies that offer you the best combination of quality, rates and benefits. and, through covered california, you may get financial help to pay for coverage. it's based on income. to get covered, you've got to get going. open enrollment ends february 15th. visit coveredca.com today.