Five. Its time we remodel. That looks nice. When your mattress is this comfortable, youll be comfortable with anything. The first memory foam with our dualaction technology. Experience comfort by serta. Visit icomfort. Com. Good evening. Thanks for joining us. Tonight, two lucky americans are celebrating a full recovery from ebola, the deadly contagion that has over 50,000 people under quarantine. As these survivors reunite with their loved ones, many are wondering if it was an experimental treatment that saved their lives. And could this new medicine hold the key to stopping their virus . Heres abcs steve osunsami. Today is a miraculous day. Im thrilled to be alive, to be well, and be reunited with my family. Reporter it feels like a miracle of medicine. Two american missionaries fighting one of the most deadly diseases on the planet, ebola. Today, doctors declared both of them healthy and virusfree. My dear friend, Nancy Writebol, wanted me to share her gratitude for all of the prayers on her behave. As she walked out, all she could say was, to god be the glory. Reporter nancys son, one of the many so glad her mom could come home. That was an emotional time. Dad told me about it. They hadnt been able to see each other for several weeks. She was able to come out of the bed and they put their hands together on the glass. One of those serene moments. Reporter for the last three weeks, dr. Kent brantly and Nancy Writebol for fighting for their lives. A plane flew them to atlanta. They had to recover in an isolation unit. Quarantined from the world. We had 5 physicians, 21 nurses who cared for these 2 patients during their hospitalization. Reporter the doctors here worked around the clock with the best medical equipment available to keep them alive, while the families prayed for the best. Today, those prayers were answered. Doctors gave both patients a clean bill of health. Theres no evidence that once a patient had cleared the virus from their blood that they will relapse. I am forever thankful to god for sparing my life. And im glad for any attention my sickness has attracted to the plight of west africa in the midst of this epidemic. Reporter with this amazing recovery comes new hope in an experimental treatment for the disease. Dr. Brantly and writebol are the first two patients to receive a serum called zmapp. Its an antibody serum, designed to help the body attack the ebola virus, speeding up the bodys process of destroying the virus. But zmapp is totally untested and unproven. I think its far too soon to say that this drug had anything to do with their cure. At this point, we dont know if the drug helped, if it hurt or had no effect whatsoever. Thats why they have to study it. Reporter while doctors in american have to figure out if the drug makes a difference, at the heart of the ebola yououtbr, the epidemic is out of control. Ground zero, liberia, where they could use the serum and a miracle. How do you feel about the idea that an experimental drug could be brought to liberia. That would be wonderful. Right now, its going to spread. Becoming an international problem. To have that and its working, that would be wonderful for our people. I think it would be a good thing. Its, like, its the better of two evils. You dont do it, people are going to die. Reporter in liberia, it doesnt look hopeful. Hospitals are few and full. This is what passing for bedside care, Holding Units for people sick with the disease. With few doctors struggling to find good and clean equipment, its no wonder the virus is spreading. Ebola is highly contagious. It kills up to 90 of the people it infects. And spreads through contact of bodily fluids like blood, sweat, vomit. Symptoms begin with fever, vomiting and blood loss. Death comes quickly, often in days. Anyone who can survive it needs constant medical attention. And here, thats a rare commodity. Patients wait for hours, even days, to get treatment. Some will die right here. How do you feel about the fact that people have to wait outside because theres no capacity . Thats a horrible feeling, to be a relative, to be a loved one, to be its really nothing much we can do. We have a few mattresses. Going to put the people out in the hallway. If anything, i will see a doctor who will help me. Reporter she has traveled to the holding unit with six children. Shes lost her mother, husband, sister and brother to ebola. And now, her nephew is sick, too. I am with him right now. Because hes sick. You see . Reporter Health Care Workers here have become targets of violence and anger. Families blame them for spreading the disease or not doing more to control it. Angry residents even attack the unit. Forcing it to close. In this kind of epidemic that were having, hospitals, should each have a holding unit. Does anyone have that in town . We do not have it here. Reporter two, new centers opened this week, workers are overwhelmed and undersupplied. There seems no end in sight to the suffering from this epidemic. I think if we really wanted to see a major difference in africa, we would need to send over thousands of Health Care Providers to be able to provide the care that these people really need. Reporter thousands of miles away, dr. Brantly and Nancy Writebol count their blessings. Tonight, they are reunited with their families and asking for prayers for this other side of the world. For nightline, im steve osunsami, in atlanta. Up next, i get to sit down with some of the hollywood heartthrobs who mount a passionate defense of all of the sex and violent in sin city, the second time around. Mary has atrial fibrillation, an irregular heartbeat not caused by a heart valve problem. That puts her at a greater risk of stroke. Rome . Sure before xarelto®, mary took warfarin, which required monthly trips to get her blood tested. But thats history. Back to the museum . Not this time now that her doctor switched her to onceaday xarelto®, mary can leave those monthly trips behind. Domestic flight . Not today like warfarin, xarelto® is proven effective to reduce afibrelated stroke risk. But xarelto® is the first and only onceaday prescription blood thinner for patients with afib not caused by a heart valve problem that doesnt require regular blood monitoring. So mary is free of that monitoring routine. For patients currently well managed on warfarin, there is limited information on how xarelto® and warfarin compare in reducing the risk of stroke. Xarelto® is just one pill a day taken with the evening meal. Spinach . Grazie plus, with no known dietary restrictions, mary can eat the Healthy Foods she likes. Dont stop taking xarelto®, rivaroxaban, unless your doctor tells you to. While taking xarelto®, you may bruise more easily and it may take longer for bleeding to stop. Xarelto® may increase your risk of bleeding if you take certain medicines. Xarelto® can cause serious bleeding, and in rare cases, may be fatal. Get help right away if you develop unexpected bleeding, unusual bruising, or tingling. If you have had spinal anesthesia while on xarelto®, watch for back pain or any nerve or muscle related signs or symptoms. Do not take xarelto® if you have an artificial heart valve or abnormal bleeding. Tell your doctor before all planned medical or dental procedures. Before starting xarelto®, tell your doctor about any conditions, such as kidney, liver, or bleeding problems. Switching to xarelto® was the right move for mary. Ask your doctor about onceaday xarelto®. No regular blood monitoring; no known dietary restrictions. For information and savings options download the xarelto® Patient Center app, call 1888xarelto, or visit goxarelto. Com vo ours is a world of the redeyes. daughter im really tired. vo the transfers. Well, thats kid number three. vo the copilots. All sitting. Trusting. Waiting. Val. For a safe arrival. Introducing the allnew subaru legacy. Designed to help the driver in you. Care for the passenger in them. The subaru legacy. Its not just a sedan. Its a subaru. You know, for someone with such a celebrated figure, jessica alba says shes a bit prudish about flaunting it. That is, unless shes in character as one of the sexiest, fearless good girls gone bad. I sat down with her costars, as they launch the wildly anticipated sequel to sin city. Theyre hoping to reinvent the comic movie genre. But did they succeed . Jessica alba knows how to work the curves of her physique. I have to ask the questions tha. You had two kids and those abs . What the heck, man . Jennifer johnson. Shes choreographer. So much of it was getting comfortable dancing. Im not a dancer. Getting comfortable on stage. And being able to go there and really kind of own it. Reporter and the frequent cover girl doesnt disappoint. Playing an exotic dancer in sin city a dame to kill for. I know exactly where i am. I know exactly what i am. Reporter jessicas character, nancy, is starred by the loss of her love, hartigan, bruce willis. So devoted to her man. And then, to have her heart broken and to be crushed and sort of like spoiled. Reporter thats when it turns gritty. Horrifyingly edgy. Its jessica alba like youve never seen her before. The movie is chock full of metaphor. What does it mean that she cuts her hair, cuts herself . Yeah, its rad. Crazys sounding pretty good right now. Shes shedding peoples perception of that sweetness. Reporter going from grieving lover to vengeful killer is going against type for this wholesome mother of two. You described yourself in some articles as a prude. That playing a stripper and being overtly sexual is not really your scene. No. Reporter and yet, you push the envelope for this particular character. Yeah. Its fun. Thats why it was so fun. Its the opposite of who i am. I run a company and have kids. Reporter that company is the honest company, which makes nontoxic, ecofriendly baby products. And jessica is at the helm, as ceo. Her reality is a far cry from the fantasy world she inhabits on the revvedup take on film noir. Its real. I can watch it. I normally have a hard time watching me. But i dont feel like theres any of me up there. Its nancy. Reporter its not just nancy. Sin city, opening tomorrow, is bursting with epic and raunchy characters, straight out of the graphic novel. Shall we . Reporter and yet these cartoonscometolife are played by hollywood heavyweights. Even a cameo from the nearly unrecognizable, lady gaga. This wont take you very far. Sweetheart, its going to take me to the moon. Reporter the characters are also into seedy sex and stomachchurning violence. This violence is palpable and fun to watch because its not realistic. Reporter even though youre being tortured . Its got a knowing humor to it. Reporter Gordon Levitt plays a charmed gambler. But greed and arrogance lead him to beat the wrong guy at poker. This boy is good. Reporter then, theres josh brolins tortured character, whose love for his ex, is leading him to depression. Its like a perfect metaphor for addiction. He sees her and thats all he needs. And he gets sucked right in. Right there is a dame to kill for. Reporter and so does the viewer, who is sucked in by filmmaker robert rodriguez. Perhaps best known for his cult hits like dusk till dawn. And spy kids. Really starting to tick me off. Reporter rodriguez doesnt just direct, he shoots, edits, even composes the movies music. And he uses the newest green screen to create this fantasy netherworld, like diving into a cartoon. I call it the dream screen. Its anything you want it to be. And you can move so fast and keep an actor in a flow because you dont have to change locations. Youre going into this sort of magical dreamscape of a world. Its like being a kid and playing pretend. And i love that. Reporter and yet, the explicit sexuality is far from childs play. In fact, its a former bond girl from casino royale, that steals the show. Shes kind of a psychopath. Do me one last favor, lover. Stay still long enough for me to blow your brains out. Reporter what was it like to play a wicked creech center. Ava is pure evil. And its fun to play somebody that is free and irreverent. Sometimes im really shy. Reporter she may be shy, but not about appearing naked in the film, multiple times. Was that hard at all . Of course. I dont know one actor that enjoys a nudity scene. You want to die. But for ava, nudity is a weapon, to get what she wants and become numb. You just do it. You forget in some weird way that you are naked. Reporter ironically, though shes not naked on the movies poster, it sparked controversy, when the Motion Picture association of america banned it. On the poster, its really suggestive. But you dont really see anything. And i find it sexy in a very tasteful way. Reporter evas costar came to her defense. We love in a prude country. They would rather send kids to war than show a womans breast, which is something thats beautiful. This speaks to our ridiculous regulations in this country and priorities, frankly. Reporter how old will your children have to be before theyre allowed to see this movie . I think between 16 and 18. Reporter and yet, they never saw spy kids until your parents let them see it. I know. My parents. Reporter but young kids are really not the target audience for this movie. Thousands of fan of the cult hit stood in line for hours at this years comiccon, after nearly a decade of anticipation for this sequel. Fans all clamoring to descend into the decadent darkness of sin city. You have to show the dark side to show that redemption, proving that youre worth a damn. You have to go down deep and dark and descend, in order to come up. Whoa. Up next, from your real best friends to your imaginary celebrity bffs, it seems everyones dumped ice on themselves for a. L. S. But tonight, theres a gamechanger in the Charity Challenge gone viral. Spokesperson you can get a 1,000 turbocharged reward card with a new volkswagen turbo. So why are we so obsessed with turbo . Because theres nothing more exhilarating than a powerful ride. And you can get that in places you might not expect. Like the passat. And also in the funtodrive jetta. In fact, volkswagen has sold more turbos than any other brand over the last ten years. That is a lot of turbo. Avo get a 1,000 turbocharged reward card on new 2014 turbo models or lease a 2014 passat s for 189 a month after a 1,000 bonus. Even 10 miles away. They can see the light of a single candle. Look after them with centrum silver. Multivitamins for your eyes, heart and brain. Now, with a new easy to swallow coating. [ male announcer ] since we began, mercedesbenz has pioneered many breakthroughs. Breakthroughs in design. Breakthroughs in safety. In engineering. And technology. And now our latest creation breaks one more barrier. Presenting the cla. Starting at 29,900. Were about to witness the upside of the ice bucket challenge. Its been everywhere, from your news feed to the newspaper. And just when were all wondering, whats it all for, the guy youre about to meet comes to the rescue. Heres abcs john donvan. Reporter okay. So, youve seen celebrities do it. And news personalities. And athletes. And a president. Even puppets are doing it. And you know why. Social networks. One wet head challenges another. I challenge i nominate nominate i challenge you reporter results, whole chains. But what is it, really . Everyone knows its for a. L. S. , the rare disease. Three letters that never had this much visibility before. But anthony carbohal, when he took the challenge himself, had a different idea in mind. His video goes on to let you meet his mother. She has a. L. S. She cannot speak. And anthonys point. The ice watter is all fun. But what its for is hard. Very hard, when its in the family. A. L. S. Runs in my family. My grandmother had it. She was a second mother to me. My mother was diagnosed when i was in high school. And i was diagnosed at 26 years old. Its so [ bleep ]. You have no idea. Reporter anthonys video is filled with some lang silences. They say so much. And as good as anthony looks right now, hes feeling it already. Theyre getting white. Eventually, i wont be able to use my arms or hands at all. Reporter he doesnt want to be a downer about this. So, he goes on to issue his own challenge. I nominate Ellen Degeneres. You should do it, girl. Reporter as far as the challenge carnival goes, hes all for it. You have no idea how ever, single challenge makes me feel. Lifts my spirits. Lifts every single a. L. S. Patients spirits. Reporter its okay to laugh. Its good to laugh. But its good, in anthonys view, to remember why. Youre truly making a difference. And were so, so grateful. Reporter and for nightline, im john donvan, in washington. And just today, Ellen Degeneres accepted anthonys challenge and invited him to be on her first show in the fall. Thanks for watching abc news. Tune into Good Morning America tomorrow. And as always, were online at abcnews. Com. Good night, america