family. >> tried to protect her anyway we could. >> family-turned army, when she vanished. >> this is how many people we have right now. >> we just started searching. >> they just wanted to find her. that kind of emotion really drives you. >> where was she? >> was someone following her connected someone attacked her? >> after scrutiny, the ex- boyfriend, and three others she encountered that night. >> scared. >> how many times did they talk to you? >> 30, plus. >> tantalizing clues, a handprint. >> there was blood on their hand >> you could almost see this happening in real-time. ■ç >> could she solve her own mystery? >> she's fighting him off. >> it was so emotional. >> i wanted to jump out of my seat. never in 1 million years would you expect something like that. ♪ ♪ on long island, about 10 miles down the shoreline from the mansions and fancy cars, and the elites of the hamptons is a blue-collar beach town some call the poor man's paradise, but life was rich for these brothers and sisters in new york, filled with the love of a large tightknit family.■ç all that was taken away one warm evening when evil rolled in with the summer tide. their youngest sister was missing. >> we just want you to come home safely. >> and for better or worse this family would go to extraordinary lengths to find her. >> we are going to scour those with right now. >> we were our own investigators. >> we want answers. >> you ever seen so many people so involved in a case before? nonlaw enforcement? >> gratefully no. missing persons cases, especially missing girls, they always get everybody's motion >> i want to say i'm sorry it happened. [ ■çcrying ] ♪ >> 21-year-old sarah goode was the little one with the big personality . her older sisters, samantha, lizzie, tabitha, and jennifer, say even though she could take care of herself, they still saw themselves as her protectors. was everyone looking out for her, being the baby? >> always. >> how many children in your family? >> there is nine of us. nine siblings. >> 20 grandchildren. [ laughter ] yeah. >> 20, my goodness, how does your mom keep up? >> i don't think any of us can. >> [ laughter ] >> how many of us are there again? >> seven sisters and two brothers. jennifer,■ç who was 12 when sar was born, fondly recalls that day. >> i just remember going to the hospital after she was born, and mom let me change her first poopy diaper. >> [ laughter ] >> you were like mom in some ways. >> i would wake up in the middle of the night and feed her. >> that's a sign of a good family. >> she would scream until you stuffed the bottle in her mouth. >> as sarah grew older and sisters began to marry her brother-in-law, nick, appointed himself chief protector. he met sarah when she was just 3 years old. >> she was very outgoing and talkative, and a very fun to be talkative, and a very fun to be around."#mjdtqi q'ever i cooked was right next to me and wanting to learn how to do it or taste it. >> you two really bonded. >> oh yeah, absolutely. i was always there for her. and if sarah was bothered by someone sarah would definitely come to me. >> i heard a story, you would paint her nails? >> oh, yes. i mean, it was, you know, some of the sisters would always be painting their nails. me owning a hardwood business, with everything, how nice it had to be, i thought, how hard would it be to paint a fingernail? >> it was another way nick took care of sarah, but even under watchful eyes the unexpected can happen, and it did. after a romance with her high ■ç school sweetheart at 17, sarah got pregnant. was she excited to be a mom? >> yeah, she was. a little nervous, but everybody is. she has some legs so much experience. she was always babysitter number one. >> they grew up in the same neighborhood and quickly became best friends. alora says she was happy to hear sarah was having a girl. >> i thought him a she's going to be just like you, and it turns out that's what happened. she always put jocelyn first. everything was always about jocelyn as it should be. >> jocelyn's dad couldn't be there when she was born, he was deployed overseas. when he returned it became clear his relationship with■ç sarah wouldn't survive the challenges of growing up life. >> not really sure what happened there. i guess they grew apart. >> sarah was now a single mom raising a baby on her own. with the help of family, of course. >> she was such a natural mother, she knew how to take care of her and love her every second. and that's what she did. >> it had to be easier to also, with all of you, and all this family. >> built-in babysitters. >> sarah didn't let teenage motherhood stop her from following her dreams. >> she graduated high school, she went to college and graduated there. >> she landed a job as a medical technician and still handled being a mother to her now-4-year-old. >>■ç well happy birthday ♪ dear jocelyn ♪ >> her eyes would light up even if not seeing her for an hour. like when she held jocelyn and kissed her on the cheek you felt in your own heart. it was amazing. >> sarah was a great mother. you know, she really stepped up to the plate for jocelyn. >> so did nick, who was jocelyn's godfather. he was there for her first halloween. >> big uncle nick carrying jocelyn to her first house you know, getting candy. >> and he helped in other ways, like when she decided to get a car. >> she said i want a bmw. >> it's happened one of his friends was selling a bmw. >> we go look at it, she loves tiu car. i thought, i said let's think about it. >> i don't see her sitting on that. >> [ laughter ] she didn't. she's like come with me to get this car right now, i want that car. >> and so she got it. did she post it all over social media? >> oh yeah, oliver. >> was that how you could tell sarah was happy by looking at her social media? >> and she was so happy just all the time. to get her to be met is very hard. >> and on the night of friday, june 6th, 2014, nick said sarah was happy. she had recently broken up with a boy she had been dating for two years but was looking forward to a night out with friends. nick had agreed to babysit jocelyn, and nothing seemed out dropped off her daughter. >> i came home from work, and she's like paint my nails. i was like leave me alone, i'm tired, i'm going to shower. she said no, i want you to paint them now. so i was like all right, come on. we left, we talked. she was going out for the first time in a long time. >> four she left, sarah posted on instagram a smiling selfie showing off her freshly painted nails. did she have any parting words before she left? >> see you guys tomorrow, love you, kiss-kiss, jocelyn kiss, and very happy, got in the car and left. >> say geez. >> but, nick didn't see sarah the next day, no winded. she was supposed to pick up her daughter at a ■çbirthday party, but she never showed, and all calls and texts to her phone went unanswered. that's got to be an awful feeling. >> yes, in your mind, in your heart, you're saying to yourself this is not normal, this is not sarah. coming up. the first clues to the mystery. her car, near the woods. and, her messages on social media. >> was someone following her? did someone attack her? >> very creepy what she posted. >> yes, very creepy. >> when "dateline" continues. n that can last for weeks. ahhh, there's nothing like a day out with friends. that's nice, but shingles doesn't care! 99% of adults 50 years or older already have the virus that causes shingles inside them, and it can reactivate at any time. a perfect day for a family outing! guess what? shingles doesn't care. but shingrix protects. only shingrix is proven over 90% effective. shingrix is a vaccine used to prevent shingles in adults 50 years and older. shingrix does not protect everyone and is not for those with severe allergic reactions to its ingredients or to a previous dose. an increased risk of guillain-barré syndrome was observed after getting shingrix. fainting can also happen. the most common side effects are pain, redness, and swelling at the injection site, muscle pain, tiredness, headache, shivering, fever, and upset stomach. shingles doesn't care. but shingrix protects. ask your doctor or pharmacist about shingrix today. no, my denture's uncomfortable! dracula, let's fight back against discomfort. with new poligrip power max hold & comfort. it has superior hold plus keeps us comfy all day with it's pressure absording layer. time for a bite! if your mouth could talk it would ask for... poligrip. what is cirkul? cirkul is the fuel you need to take flight. cirkul is the energy that gets you to the next level. cirkul is what you hope for when life tosses lemons your way. cirkul, available at walmart and drinkcirkul.com. - [narrator] life with ear ringing sounded like a constant train whistle i couldn't escape. then i started taking lipo flavonoid. with 60 years of clinical experience, it's the number one doctor recommended brand for ear ringing. and now i'm finally free. take back control with lipo flavonoid. on saturday, june 7th, 2014, single mom, sarah goode, didn't show up to a family birthday party, where she was supposed to pick up her 4-year- old daughter, jocelyn. no one in the family could reach her all day. her sister, lizzie, says, she knew something was terribly wrong when sarah didn't respond to messages that her daughter was asking for her. >> ■e9 mom. i called her, it went to voicemail, so i thought something was not right. she always would answer if you mentioned jocelyn, especially. >> it's heartbreaking that a little girl wants to talk to her mom, and you can't find her. when sarah had not appeared sunday afternoon lizzie went to the police station to report her missing. >> she said i need to report her now. >> that report set things in motion. jenna albertson, since retired, was on this missing person's case from the beginning. she learned the day sarah was a no-show a woman spotted an abandoned blue bmw near the lot. >> the respondent thinking this was a stolen car, the plates wmrd bent. >> albertson says the bmw was found less than a mile from sarah's mother's house or sarah and jocelyn also lived. >> it came back to sarah good and nobody was there, because as they will learn they were at the birthday party. >> the officer noticed the abandoned car was still in the same spot. >> the officer radios it in again, and at this point now, sarah's family had reported her missing. >> so things were clicking now? >> executive. once it came back as a missing person now they have a reason to pay attention. >> detectives needed the spare key, so they headed to sarah's house. jennifer was there, and she ■ç desperately wanted to know where was the car. >> i just remembered overhearing one detective to the other detective that the car is in eagle estates. that's when i told them, like, he said the eagle estates, and we all followed them. they told us not to go follow them, and i was like i don't care to arrest me. you know? [ laughter ] >> eagle estates was a place they knew well, because it was so close by. a large entourage of sarah's family headed over there and tried to approach her bmw, but police would not let them get too close. what was that like seeing her car there? >> scary. >> hard. >> they wouldn't let us near it. >> the police had a job to do, so things got heated. sadie shouted at detectives, and detectives shouted back. >> we were yelling at them, like open the trunk. we are doing and anything until you we aren't doing anything until-- >> we kept circling around in our cars instead of on our feet. >> later that night the family finally got some answers. detectives told them sarah was not in the car. were you trying to hold on to help? >> yeah, trying, yeah. >> hope turned to action when the family got organized in a big way. >> everybody came to my house, and we just started searching just anywhere we thought to go. >> how many ■çsuch volunteers a we talking about? >> it was at least 200 the first day. >> you can see how many people who cared about her. >> we put it together in an hour on, you know, social media, and you know, this is how many people we have right now. but there's more on the way, and there's already people searching. >> beyond searching, this large family started its own investigation, making calls and coming through social media. >> checking facebook, to make sure if she updated anything. >> the professional detectives were also looking at sarah's online life piecing together clues starting with the picture she posted on instagram of her freshly painted nails. they learned she was at nick's house around 6:00 p.m. and from the picture ■çthey cou see what she was wearing. >> she had on tank tops and this very unique tank top over it with an i will face, and her little headband. >> police then confirmed after sarah kissed her daughter goodbye and left her brother-in- law's house, she drove to a friend's place. >> she hooked up with a friend of hers, a childhood friend by the name of jason florez. >> a timeline was coming together. she picked up jason in her mw. >> they referred to each other as cousins, because they grew up together. >> a second selfie at 6:51. >> jason took a selfie where you can see sarah driving, and she is so happy. i mean, she was just beaming.■ç she looked like a happy kid, like for her first night out in while. >> he picked up brandon allen, a good friend of jason's, and a new friend of sarah's, and headed to a small gathering. a dozen or so young people hanging out in his front yard. investigators estimate they stayed there about 40 minutes before they left, they took this group shot at 10:18 p.m. that's sarah in the pink sweatshirt next to jason. >> where does she go, hmmm? >> at that point she and jason are going back to brandon's house, he lives around the corner. so, sarah drove jason and brandon back to brandon's house where they watch "the hobbit," the movie. >> sarah agreed■ç to drive jaso home. after she dropped him off he sent her a text at 1:17 a.m.. >> basically asking are you okay? she says okay. >> all that seemed routine. then something ominous. on sarah's twitter feed her brother-in-law, nick learned that days before sarah went missing she tweeted, so you know i live on a dead-end. i see you creepin. getting threatened for days now. is that the thing to do? >> that one got to me, was someone following her? did she get to the house and some attacker? it's very dark where she parks. >> very■ç creepy, the post. >> very creepy. >> no one had any idea who or what she was referring to. there were so many questions, and sarah's brother-in-law wanted answers. with the help of some large friends, nick went looking for anyone who was with sarah the night she vanished. it sounded more like a detective than a floor refinisher. >> who did you see her talking to you mark who did she leave with? who was she socializing with? >> you wanted to find information? >> yeah, i wanted answers. here's me and five of the biggest guys you could only imagine knocking on your door. >> was anybody getting ■çhot under the collar? >> not from anybody. >> that's got to be frustrating that nobody is standing out. >> nobody was standing out, everybody was really sincerely telling the truth. >> but someone in particular, sarah's ex-boyfriend, he wanted to question. their relationship had just ended, and sarah's family was getting suspicious. >> no one could say what was going on between them, why they split, but we thought we knew him well enough. we thought he was a great guy. >> you don't know everybody, you don't know exactly what a person is capable of doing. and he didn't show up to work the day after she went missing? >> no. coming up, new questions about■ç the ex-boyfriend. >> there were rumors going around about dj and his family. to severe eczema, it's okay to show off. with dupixent, show off your clearer skin and less itch. because you have plenty of reasons to show off your skin. with dupixent, the #1 prescribed biologic by dermatologists and allergists, you can stay ahead of your eczema. it helps block a key source of inflammation inside the body that can cause eczema to help heal your skin from within. many adults saw 90% clearer skin, some even achieved long-lasting clearer skin and fast itch relief after first dose. serious allergic reactions can occur that can be severe. tell your doctor about new or worsening eye problems such as eye pain or vision changes including blurred vision, joint aches and pain, or a parasitic infection. don't change or stop asthma medicines without talking to your doctor. show off to the world. ask your eczema specialist about dupixent. sleep more deeply and wake up rejuvenated. purple mattresses exclusive gel flex grid draws away heat, relieves pressure and instantly adapts. sleep better. live purple. right now save up to $800 off mattress sets at purple. visit purple.com or a store near you today if you do not have a group. andrea canning: three days after single mom sarah goode ■ç three days after a single mom, sarah goode, disappeared from her home on the south shore of long island, scores of searchers continued to comb through the woods, posting signs and leads hoping to locate her. >> we cannot wait to give you a hug when you come home. >> so far, detectives were revealing only one clue to the public. >> the fact that her car was found unoccupied, she loves this car-- something is suspicious here. and we want to find this girl. >> nicole covered the story for the advance. >> it was the biggest story i had gotten yet, and also hit home, because she was only a little younger than me. >> what were people saying? >> there are hashtags created almost immediately■ç. there wer postings on where they were going for searches, who was going, how many people were searching-- anybody was looking for sarah. >> and nicole says during the searches gossip mill was buzzing with rumors about sarah's recent breakup with her long-term boyfriend. his name was dj. >> there were a whole bunch of rumors going around about dj and his family, and that things were not going well in their relationship, that they had just broken up i think 10 days, they said, before she went missing. >> so nicole was a bit taken aback when she spotted the ex- boyfriend while she was out covering the story. she saw him in a crowd of searchers. >> as a reporter i felt like i ç had to talk to him once i knew who he was, but i was also cautious, like what if he actually had involvement in this? >> investigators who were working around the clock in hopes of finding sarah live heard about the ex-boyfriend. did he need to be looked at? >> i think everybody should be looked at. when you don't know what happened you can't exclude anybody. >> there was an anonymous call on the crime stoppers tip line, detectives learned a strange and disturbing story about the ex-boyfriend, dj, and his mother. apparently the breakup with sarah had gotten ugly. dj had left a threatening voicemail. >> the message dj left-- in the voicemail wasn't physically threatening bodily harm to sarah, it was more, take that post down, . >>■ç the message upset dj's motr , he threatened to kill her, so hence the 911 call. what's her concern? >> i think her concern in the call was to make the report, and really the report she was looking to make was that the mother had threatened her about this post. >> the prosecutor thought this might explain one of sarah's strange tweets, the one she posted four days for she went missing, getting threatened for days now, is that the new thing to do? >> the tweet was clearly associated with the phone call from the ex-boyfriend about take the posts down, and the mother being upset that she had put the post up. >> but she was not sure to makeç of the other one, so-- you know i live in a dead end? i see you creepin. >> obviously s