♪ [ cheers and applause ] this is "nightline." >> tonight, a nation in mourning. we're in las vegas with resilient survivors. >> i knew that if we stopped, the chances of us getting out weren't very good. >> with a family at a loss. their sister killed before her boyfriend could propose. >> she deserved a chance. she was literally dying in my arms. >> the latest in the investigation. what the shooter's girlfriend is saying and why authorities are leaving it to whether he may have had accomplices. plus ryan gosling and harrison ford. >> they know you're here. >> on their new sci-fi sequel "blade runner 2049

relationship. >> it is not a romance or car chase movie. >> i'm sorry. >> behind the scenes misadventures. >> i threw 80 punches, i hit him one time, a pretty good average. >> why movie fans have been clamoring to return to this dispopian nightmare. >> part of the reason why i think it became a cult classic is because you couldn't shake it. >> first the "nightline 5." >> i had this chest cold but my medicine kept wearing off. then i discovered mucinex. one pill lasts 12 hours and i'm good. >> why take four-hour medicine? one mucinex lasts 12 hours. let's end this. ♪ when you've got nausea heartburn indigestion upset stomach diarrhea ♪ >> here's pepto-bismol. >> number one in just 60 seconds.

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good evening. thank you for joining us. tonight we're learning new details about the gunman of the las vegas massacre. what he did inside his hotel room before the shooting and that he may have planned to escape. and while we dive deeper into his background, we learn more about the lives he stole. my "nightline" coanchor juju chang unless las vegas with victims and loved ones still managing their heartbreaking grief. >> reporter: you're so right, byron. i just left the home of a family whose grief is inescapable. they lost a daughter, a sister, a young woman who had just found the love of her life, struck down, leaving behind this heartbroken family. tonight they're huddling together, trying to make sense out of the senseless violence. andrea castilla was out celebrating her

with her sister athena and boyfriend derek miller who had been waiting for the right moment to propose. >> i told him, she would have said yes immediately. >> reporter: the country music fans were having the time of their lives, when terror struck. >> my sister was like, duck! so we duck. next thing you know, she was already hit. >> it happened so fast -- >> it happened so fast, just happened so fast. >> reporter: andrea shot in the left side of her head. >> oh, so much blood, i've never seen so much blood in my entire life. >> reporter: she fell to the ground. her sister athena shielding her from incoming fire. shielding her not just from bullets but -- >> from the panic, because people were trampling, running through. and i just -- we were just trying to shield her, you know. >> reporter: using a gate as a makeshift stretcher, her sister finally gets her to a pickup truck, taking victims to the hospital. >> couldn't give up on her, she deserved a chance to get help. she was literally dying in my arms. >> what did you say to her in

those moments? >> just, you're our angel, you're going to be fine, don't leave me. >> reporter: with so many victims and andrea without her i.d. the hospital mistakenly told the family she was still alive. for nearly seven hours she held out hope. >> i was trying to stay positive that she was going to make it. but i could see all the blood, it was all over me. >> essentially, she died in your arms. >> yeah. >> reporter: after their mother had died of cancer, andrea wanted to use her talents as a makeup artist to make cancer patients feel beautiful. >> she was a beautiful soul. there's not much more to put it. she shouldn't have died that night. >> they lost one of the most beautiful souls on this planet. every single room she walked into, she lit up. >> reporter: for jenna decandio, it was a delayed graduation present. a big country western fan? >> we all are, we go to concerts together. >> reporter: the tight-knit trio, jenna and her parents, jill and george, driving from north carolina to see eric church, jenna's favorite. on the last night, terror

struck. >> we just saw jason aldean, all the people on the stage just drop everything and run. >> reporter: already hobbled with a broken foot, jen ka leaping on her parents for support feels a burning sensation. >> i was shot. and they took at me, what? my mom sees the blood is just like coming out. she found something and pushed it on my hip. >> there were dead bodies in the street. and that's when it hit me. not only are we running, we are really running. >> how were you able to hold it together? it's incredible. >> i knew that if we stopped, the chances of us getting out weren't very good. >> you knew you were doing this for your parents. >> i knew we had to keep going. >> reporter: now she's here, recovering after surgery. the bullets still lodged in her body, a reminder of what could have been. >> it makes you stop and appreciate what you have. and i'm really fortunate to have both of my parents still. >> she saved all of us. i mean, she's a hero i

>> reporter: today the president and first lady traveled to las vegas, meeting with victims, their families, and first responders. >> we know that your sorrow feels endless. we stant together to help you carry your pain. you're not alone. >> reporter: tonight the las vegas sheriff providing new details about the the shooter. >> he was doing everything possible to figure out how he could escape at that point. >> reporter: and they say they're actively looking for possible accomplices. >> it's troublesome that this individual was able to move this amount of gear into a hotel room unassisted. >> reporter: today authorities questioning the woman who may have known the shooter best, his long-time girlfriend, mary lou danly, who was in the philippines at the time. she arrived back in the u.s. this morning telling the fbi, according to law enforcement, she had no knowledge of his plans or that he had bought so many guns. her lawyer read a statement on her behalf. >> he never said anything to me or took any action

aware of, that i understood in any way to be a warning that something horrible like this was going to happen. >> reporter: according to danley's sister in australia, who wanted their faces blurred, paddock sent her to the philippines just two weeks before the shooting. >> sent her away. so that he can plan what he's planning without interruptions. >> reporter: police say he was gambling right before the massacre. >> stephen paddock is a man who spent decades acquiring weapons and ammo and living a secret life. much of which will never be fully understood. >> reporter: today a clearer picture of how the shooter meticulously planned his attack. federal sources say he looked into a rented room in this building, right next to another music festival featuring lorde, the week before. inside the mandalay bay sunday night, the shooter installing his own surveillance system. a camera hidden on this room service cart. another behind the peephole looking down the hall. all rigged so he could see

investigators have recovered 23 firearms inside the hotel. 12 of them rifles. each modified with a bump stock that enabled them to fire like machine guns. an onslaught of firepower that took a devastating number of lives. earlier this week a candlelight vigil for police officer charleston hartfield, a member of the nevada army national guard. and a youth football coach. >> even though officer hartfield was at the concert as a civilian, he immediately took action to save lives. in that moment, he was acting as a police officer. he ultimately gave his life protecting others. >> reporter: sonny melton, 29-year-old registered nurse from tennessee, saving his wife's life before taking a bullet in the back. >> he wrapped his arms around me from behind and we started running. and that's when i felt him get shot in the back. he was still breathing at that time. but then he stopped. >> reporter: 5-year-old aidan hoos

mom, aunt, and sister. >> i didn't know where to run. >> reporter: luckily lindsay rogers, a complete stranger, grabbed him, posted his picture on social media, and got him home. >> he was really brave and really good. he didn't cry or anything. >> reporter: the horror is still fresh. >> today we were talking about post-traumatic stress syndrome and things like that. the counselor was saying, this is what you might expect, how are you doing? she says, i've had nightmares. >> we have to remember and remind ourselves, this is absolutely abnormal, this is absolutely not okay. >> reporter:ed this night therapist dr. michelle paul rushed to the scene to help victims suffering from the shock and horror that she says could leave emotional scars for years to come. >> the nervous system has just been under an assault. and it's going to respond by shaking, by uncontrollable tears apparently coming out of nowhere. >> when someone experiences a trauma like that, as the weeks

something's wrong? >> after about a month, if that's still happening, it's time to definitely reach out to a mental health professional. >> reporter: andrea castilla's family says athena and andrea were more than sisters, they were best friends. what do you want the world to know about andrea, your sister? >> that she was a strong soul, and to anyone else that's suffering from loss from this horrible night, i mean, hang in there and be strong. >> how about you, what will you miss? >> kind of miss her smile, she brought so much joy and happiness. >> reporter: their bond almost perfectly immortalized by none other than jason aldean. ♪ oh man we were living didn't wait for a minute ♪ ♪ we talked and drank and danced and said good-bye ♪ ♪ we laughed until we cried

>> our thanks to juju. next, we're moving on to the new sequel more than three decades in the making. ryan gosling and harrison ford telling their stories from behind the scenes of "blade runner 2049." having moderate to severe plaque psoriasis is not always easy. it's a long-distance run. and you have the determination to keep going. humira has a proven track record of being prescribed for nearly 10 years. humira works inside the body to target and help block a specific source of inflammation that contributes to symptoms. in clinical trials, most adults taking humira were clear or almost clear and many saw 75% and even 90% clearance in just four months. humira can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal, infections and cancers, including lymphoma have happened as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. before treatment, get tested for tb. tell your doctor if you've been to areas where certain fungal infections are common,

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"blade runner 2049" is being called one of the most visually stunning movies of the year. not just because it stars ryan gosling. the film takes us back to the futuristic dystopia of the original 30 years later, reit

hero. here's abc's nick watt. >> reporter: many will judge "blade runner 2049" and its futuristic dystopia on the first few seconds they see. >> they know you're here. ♪ >> reporter: mood, the pace, the feeling and -- harrison ford and ryan gosling. >> i had your job once. >> i know. >> this is not a running, jumping, and falling-down movie. this is not a light comedy. this is not a bromance or a car chase movie. i'm sorry. god, that was a hurtful thing to say. >> reporter: reports from the said that ford actually made contact during filming of one fight scene. did you punch him in the face by mistake? >> yeah, why

i mean, don't you sometimes get irritated about how old you are and how good-looking he is? i just -- i took a small moment. and let it fly. right? i threw 80 punches, i hit him one time, that's a pretty good average. >> i saw it written in the margins of his script, "make contact." >> reporter: ford reprizes his role from the original 1982 "blade runner," movie, ex-cop rick eckert. >> just answer the questions, please. >> reporter: then and now. >> what do you want? >> i want to ask you some questions. >> reporter: it's 2049 in the los angeles where it still rains a lot more than real life and gosling plays a new generation of blade runner. >> action! >> reporter: cleaning the streets of replicants, rogue humanoid robots. the theme, what it is to be human. >> if you could look up and to the left, please.

>> if this gets out, we've bought ourselves a war. where are we going to be in 2049? we're already producing bio engineered people. will they be as emotionally human as we are? that could be an army of people that could take over. >> you're not making me teal any better about this. robin wright is gosling's boss. >> so what you saw didn't happen. >> yes, madam. >> you were rather scary in a good way, don't you think? >> good cover. that was a really good cover. the minute i decided to do the hair back and shellac it -- i was like, there she is. >> who did you bring? >> reporter: it's taken over three decades for the sequel to happen, stymied by wright's issues and the like for that long. >> the first time i

runner," i said what an exciting, fantastic, bad idea. >> reporter: and the script won him over and the crucial harrison ford and ryan gosling. >> as massive as it is, as provocative conceptually as it is, it's still a very intimate, personal and emotional story. and that's so unique to "blade runner." >> reporter: ridley scott does not return to the director's chair. >> he's a very busy man. harrison ford wanted to shoot sooner than later, so that's why i came on board. >> reporter: he's an ep and adviser to the canadian dennivilleneuve who includes "arrival." you're the director but ridley scott is looking over your shoulder? >> he gave me total freedom. >> reporter: early reviews are, frankly, stellar. but when the original was released in 1982, it was not a cr

in the 35 years since, "blade runner's" cult status has grown and grown. >> time to die. >> the original is such an experience. but what's also interesting is the experience you have after you've seen it. because part of the reason why i think it became a cult classic is because you couldn't shake it. it was painting this nightmarish vision of the future that felt possible. >> does the nightmarish vision of the future seem more plaus nibble 2017 than in 1982? >> to me i can clearly see that unless we revert to respect for science, a love of nature, and our progeny, what comes behind us, the planet is under dire stress. >> reporter: sequels to classics can be a dangerous game. >> there is pressure, right? to make sure that you do it

to make sure you take advantage of the opportunity you have with every film. >> reporter: i'm not going to tell you anything about the plot. >> i'm terrified of putting out spoilers for this film. i don't know what i'm allowed to say. >> i don't either. >> it makes it hard for me to then do a six or seven-minute story -- >> yeah, for you. but it's hard for us too. >> reporter: watching is not a struggle. 2:30 long. daunting, perhaps. until you try it. my butt went to sleep but i didn't. >> sorry for your butt but your brain stayed on. >> reporter: thanks to the legendary cinematographer roger deek kin deekens and the actors giving their all. there's action and enigma and the deepest question of all. >> this is what it means to be a human being. what are our opportunities, what are our responsibilities, do

it's not the answers, it's the questions. there are a lot of questions left unanswered. and it's kind of like life. >> reporter: i'm nick watt for "nightline" in los angeles. next, why decades later this clip of mr. rogers is now going viral. my friend susie cracks me up. but one laugh, and hello sensitive bladder. ring a bell? then you have to try always discreet. i didn't think protection this thin could work. but the super absorbent core turns liquid to gel. for incredible protection... ...that's surprisingly thin. so it's out of sight... ...and out of mind. always discreet. for bladder leaks.

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we are the tv doctors of america, and we may not know much about medicine, but we know a lot about drama. we also know that you can avoid drama by getting an annual check-up. so go, know, and take control of your health. it could save your life. cigna. together, all the way.

finally, as you know, we often end our broadcast with a quote. tonight comes from the hero security guard jesus compose who found the gunman and las vegas and even after being shot managed to report his location to police and almost certainly saved lives. tonight mr. compos told us, "i was just doing my job." modest, elegant in its simplicity. words from an old friend, a neighbor long celebrated

elegant simplicity, who today became quite the hit on social media. you remember him, mr. rogers. good night, america. thanks for the company. >> my mother used to say, a long time ago, whenever there would be any really catastrophe, she would say, always look for the helpers. you know, just on the sidelines. because if you look for the helpers, you'll know that there's hope. >> welcome to whiz kids week. we've got a bunch of young people with big brains and equally big dreams here today. all of them determined to win that million dollars. so what are we waiting for? let's play "who wants to be a millionaire." [cheers and applause] [dramatic music] ♪

hey, everybody, welcome to "millionaire," it's whiz kids week. and oh, are we in the middle of a great game. from ponte vedra beach, florida with an iq in the 99th percentile, please welcome back chase magnano. [cheers and applause] welcome back. >> thank you. >> last we saw you, you were on one of the best runs i have seen in a long time on this show. and i don't care if it's whiz kids week or any week, you're just having a great game, because you're at $50,000. [cheers and applause] you still have all three lifelines available as far as "ask the audience," you have "50/50," and your "plus one," who is your dad. all right, how are you feeling? >> feeling good, really good. >> this is fun, a fun game for you. >> yeah, it is. >> what would you do with this kind of money? you've already got 50 grand in your pocket. >> yeah, so for the past seven years, all the money i've been getting for my birthday, i've been donating to charity. and i'd like to continue that tradition today by donating the money i get here. [applaus