>> i was. >> reporter: why did it take so long? >> there is so much backlogged d.n.a., and it just waited and waited and waited. >> reporter: in july of 2011, an excited detective schoneman called jeff with the results. >> she just says, "are you sitting down?" "do i need to be?" and she says, "i don't know." she goes, "you might want to." >> i said, "it's her, jeff. we found her. it's her." >> it wasn't good news at all. i mean, but it was good news for me to know that we found her. we knew where she was at. >> and i just started shaking. just shaking, shaking, shaking. >> he called me, and we cried together. you were glad to know that you had an answer, but then it was permanent, you know? it was like she just died, because you just found out. to you, she had just died. >> reporter: after 30 years, there was no longer any question amy hurst had been murdered. and for amy's family, no question who did it. >> we knew absolutely it was bill. >> but we have no way to prove it. >> i thought he would get away with it. i had this chronic, deep ache all over. it just wouldn't go away. my doctor diagnosed it as fibromyalgia, thought to be the result of overactive nerves that cause chronic, widespread pain. lyrica is believed to calm these nerves. i learned lyrica can provide significant relief from fibromyalgia pain. so now, i can plan my days and accomplish more. 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[ male announcer ] ...at aflac.com. for you and your family... aflac? >> tonight's "48 hours" will continue. it looks like most of this will be overnight, sunday night into monday morning. it's going to turn breezy and colder tonight with the clouds thickening and we are going to see the rain clouds and snowflakes approaching with the worst of it sunday i know fios is better, but i think switching would be a hassle. [ male announcer ] we heard you, and we get it. so now we've made it easier than ever to switch. i'm worried that the price is going to change. [ male announcer ] get a two-year price guarantee, i don't like contracts. 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[ male announcer ] making it easier than ever to get the best -- that's powerful. >> reporter: amy hurst's killer had gone unpunished for 30 years, only to be tripped up by a very stupid mistake. >> when we confirmed that she was murdered and where she was found, it could be nobody but bill. especially when she was found with the blankets off her own bed. >> you don't go off with somebody that kills you, and then they bring you home and wrap you in your own blankets to dispose of your body. you were at home when you were murdered, and it doesn't take a great detective to figure that out. >> reporter: now, all this detective had to do was find him. did you at that point know where bill hurst was? >> i thought he was in michigan. i went to see his sister who still lived up there, and she told me where he was at. >> reporter: she even agreed to call him. >> she said, "bill, the police had been here. they found amy's body. what did you do?" >> reporter: you wanted to make him nervous? >> of course. what happens when you get nervous? >> reporter: you make mistakes. >> yes, you do. >> reporter: hurst had been living here in dawson springs, kentucky, a small town in the western part of the state, once the home of the imperial klans of america. but if he thought his neighbors would stick up for him in his time of need, he was sadly mistaken. elmer kruse, a retired tool and dye maker, was a close friend. what did you think of him? what was he like? >> oh, he just seemed like one of those guys, you know. i mean, he was... he drank a lot, but so do a lot of people, you know. >> reporter: did he tell you he'd been married? >> he told me that he had had a girlfriend named amy, but he said just all the sudden she got up and left. >> reporter: after his sister told him the cops were on his trail, hurst called elmer. >> yeah, he sounded really, really, down and really bad, and... and so i went over there. >> reporter: and heard a shocking admission. >> and he said, "my past has finally caught up with me." he said, "i'm going to go to jail for the rest of my life, if they don't execute me. i thought i'd got away with it." but he said... evidently, he said, "i think they... they found the body." and then i thought, "whoa." >> i get to town. i contact the local police department, which were great, you know. and not a lot happens in their town, so this really excited them. >> reporter: turns out captain craig patterson already had his eye on hurst for allegedly selling prescription drugs. but the idea that he had murdered somebody and put their body in the gulf of mexico was not something that... >> no, that was not anything that i would have guessed in 100 years. >> reporter: so, where did the break in this come? >> the break came when elmer kruse walked into the police department here and said, "bill hurst told me he disposed of a body a long time ago, and it had caught up with him." we knew. here's our break. we've got to go now. >> reporter: they hatched a plan to trick hurst. elmer would go back up to his house with a surprise. >> reporter: wait a minute, wait a minute. ( laughs ) elmer agrees to wear a wire? >> yeah. yeah. >> reporter: why do you think he did? >> because he said it wasn't right to kill somebody. >> i would not let anybody get away with murder. it's that simple. >> reporter: "48 hours" obtained the tape of their extraordinary conversation. >> reporter: hurst is nervous and wants reassurance. >> reporter: based on elmer's tapes, a grand jury indicted william hurst for first-degree murder a few weeks later. it had been 29 years since the murder, and now it was time for an arrest. schoneman was leaving nothing to chance. hurst had become a recluse, hunkered down in his house. >> he wasn't coming out, you know. he was barricading himself in there. >> reporter: and he was heavily armed. >> he had a .45 that he had bought, a pistol. and then he'd bought a .380 and a couple of rifles. >> you'll always have to worry about that, but you can't let it stop you. if i let that stop me, i'd never make an arrest. and, you know, i just have to be prepared for it. >> reporter: a swat team was hiding outside, almost ready to pounce... ...when hurst's dog did them a huge favor. >> but, you know, he cared enough about the dog when it got tangled and couldn't reach its water, that he left the seclusion of the house to come out and untangle him. >> reporter: and that's when they grabbed him. >> yes. yes. >> you have the right to remain silent. anything you say can and will be used against you in a court of law. you can decide at any time to exercise these rights and not make any statements or answer any questions. do you understand those rights? >> reporter: "48 hours" was at the station when hurst was questioned. he did not ask for a lawyer. >> i have a reason to arrest you for your wife's murder, but i would like also to hear your side of the story. do you want to tell me that your side of the story? >> all i can tell you is i didn't kill her. >> if you didn't kill her, how'd she die? and how did she end up in the gulf of mexico? >> that's about as much as i want to say right now. >> reporter: he still doesn't specifically ask for a lawyer, and detective schoneman plows right on. >> and i know you were there when she died, and i know you got rid of her body. >> yeah. >> i'd like to know why. >> reporter: hurst tells her, blaming amy for what happened. >> she went to kick me. >> uh-huh. >> and when she kicked me, her foot slipped, and she fell and she hit her head on the back of the concrete floor. >> was it just the one time she... >> that was it. >> ...hit her head? did she bleed, or did she... what happened? >> i didn't have... notice any bleeding. i... and i panicked, and i didn't know what to do. >> reporter: all just a terrible accident, he says. >> and i rolled her up in the blanket, and i did dispose of the body. now, that i'm guilty of. >> well, how... where did you... you use the boat to do it or... >> no. off the sunshine sky bridge. >> why didn't you just call the police, bill? i mean... >> i don't know. i just panicked out. i don't know why. i know i should've done that, but i don't know why i didn't. i just wigged out, and i didn't know what to do. so... i couldn't for the life of me bring-- because that's the woman i loved with all my heart- - i couldn't bring to bear the fact that she had passed. >> reporter: hurst almost seems to think he deserves sympathy. >> are they going to release me and go back to my house, or what? >> oh, no, bill. you're... you're under arrest, buddy. you've been charged with first- degree murder, and you're going to... >> it ain't first-degree murder. >> ...be staying in custody. >> reporter: with hurst behind bars, schoneman makes the call she's been looking forward to for years, to amy hurst's son, jeff. >> hey, what's up? >> guess what? >> what? >> it's over, dude. it's all over. he's in custody. he's been charged with your mother's murder. >> no kidding. >> that was a great call. i didn't tell him i was going. i didn't tell him what i was doing, initially, because i didn't want him to be disappointed. >> please be seated. this is the state of florida versus william hurst. >> reporter: but disappointment may be coming. before trial, a judge rules that most of schoneman's interrogation can't be used as evidence, all because of one sentence. >> that's about as much as i want to say right now. >> the judge found that because he said he didn't want to talk about it, that he had implied his right to remain silent, so he didn't allow my conversation to be heard by the jury. >> reporter: but without hurst's candid admissions of how amy died, how he rolled her body in the afghan, how he dropped her off the bridge, what would a jury decide? 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[ female announcer ] if you're struggling with bipolar depression, there are treatment options. ask your doctor if once a day latuda, lurasidone hcl, may help you. in clinical studies, latuda has been shown to be effective for many people struggling with bipolar depression. latuda is not for everyone. call your doctor if you have unusual changes in mood, behaviors, or thoughts of suicide. antidepressants can increase these in children, teens, and young adults. elderly dementia patients taking latuda have an increased risk of death or stroke. call your doctor if you have fever, stiff muscles and confusion, as these may be signs of a life-threatening reaction or if you have uncontrollable muscle movements, as these may become permanent. high blood sugar has been reported with latuda and medicines like it, and in some cases, extreme high blood sugar can lead to coma or death. other risks include decreases in white blood cells, which can be fatal, dizziness upon standing, seizures, increased cholesterol, weight gain, increased prolactin levels, impairment in judgment, or trouble swallowing. avoid grapefruit and grapefruit juice while taking latuda. use caution before driving or operating machinery. there are paths to treat bipolar depression. ask your doctor if once-a-day latuda for bipolar depression is right for you. ♪ for savings options, visit latuda.com. for savings options, someonoikos man.n handsome... once you go greek... it's on the house. i'll pay you back reeeeal soon. grrrrrrrrrr. works every time. and stamos is right on schedule. she is so gonna own him. (both) hahahaha. all aboard the stamos train. wow wooow! dannon oikos greek yogurt, fuel your pleasure. are you guys enjoying this? very much so. >> reporter: it's been 30 years since both wendy huggy and amy hurst disappeared.l known, but, in searching for clues about wendy, detective lisa schoneman solved the mystery of amy, the final chapter now about to be written in a florida courtroom. >> ladies and gentlemen, just like every good book has a title, this story has a title. the title is "i almost got away with it." >> reporter: so begins the prosecution's case against william hurst, charged with first-degree murder in the death of his wife, amy. for amy's family, the trial is a necessary but painful ordeal. sitting in that courtroom, you know, 20 feet from this guy. >> that was hard to do. i couldn't look at him when i was on the stand. >> i couldn't, either. >> i stared at him the whole time i testified. i had to look him in the eye. >> amy was my aunt. >> reporter: family members recount hurst's physical abuse of amy. >> amy and bill were arguing back and forth, yelling. bill told her to shut up, and he backhanded her across the face. >> black eyes, fat lips. i saw him hit her with an iron skillet. he threw her through a shower enclosure into a bathtub and down a flight of stairs. >> reporter: you recall this as a kid? >> oh, yeah. that was one that you don't ever forget. >> did you ever recall mr. hurst threatening to kill your mom? >> yes. >> reporter: hurst's defense is not a surprise. >> this death was an accident. she tried to kick him, she fell, she hit her head. she died accidentally, and that is not a murder. >> there were two gashes to the back of the head. they're right here and here. >> on the left side of her head, there was another marked contusion somewhere over here. >> reporter: but to medical examiner dr. russell vega, the multiple injuries indicate that amy's death was no accident. >> would you expect to see those types of injuries when someone falls and hits their head? >> not three injuries, no. my opinion as to the cause of death is death caused by unspecified homicidal violence. >> reporter: but proving murder could be a problem for prosecutors because the judge has ruled that they can't use the tape of hurst's incriminating interview. >> i can't remember if she died instantly or she was just knocked out because it was like three days between the time that it happened to the time i disposed of the body. >> reporter: detective shoneman admits she wanted the jury to hear that. were you completely confident in your own mind that you would be okay without it? >> you're never completely confident, you know? you don't know what the jury's going to think. >> he has his elbow on his coffee table, had his head in his hand. >> reporter: but the jury does hear elmer kruse's chilling testimony. >> so, he said, "i got rid of a body the way you're supposed to get rid of a body." he said, "i wrapped it up in plastic, tied a concrete block around it, took it out and dropped it in the water." >> this is what he uses. >> reporter: perhaps the most damning evidence of all, the secret audio tapes elmer kruse made in which hurst brags about his crime. >> thank you, sir. you may step down. >> reporter: what was that like for you? >> it was a new experience. that's the first time i'd ever done anything like that. but see, when you tell the truth, you don't have to worry about if what's right. my wife tells me every day that i'd done a good thing. >> reporter: the defense calls no witnesses... >> this is a case of a tragic accident. >> reporter: ...and william hurst does not take the stand. >> i'm upset about that. >> reporter: really? why? >> i want to know. i want him to tell me what happened. >> reporter: you still want to know exactly what happened? >> absolutely. >> this defendant, william hurst, is guilty of first-degree murder. thank you. >> reporter: what was your frame of mind when the jury went out? >> at that point, i just wanted to go home. but they said sometimes it can take eight hours, or sometimes it can take 20 minutes. >> reporter: in fact, the jury is out a mere three hours. >> i understand the jury has reached a verdict? >> yes, sir. >> defendant, please rise. >> "state of florida verses william hurst. verdict: the defendant is guilty of murder in the first-degree as charged in the indictment, as say we all this fourth day of april..." >> reporter: can you describe your feelings when you heard those words, "guilty." >> i had something in me that i didn't know it was even there. >> reporter: what do you mean? >> i just gasped out and started crying. and my cousin was sitting next to me, and we both just cried and cried. >> mr. hurst, you are well and truly an evil man. i sentence you to life in prison. >> reporter: life with no chance of parole for 25 years. did you want him to get the death penalty? >> uh-uh. we don't want the death penalty because that's the easy way out. >> reporter: amy's family gathered at elizabeth lake in waterford, michigan, where amy had often spent family vacations. >> her ashes were spread on the water, and they had roses on it and they had rose petals out there. and it was absolutely beautiful. it's been 30 years. time heals, but, as we stood there on that boat, i thought to myself, it's just like she died yesterday. her kids in so much pain. >> they have had to live all these years without their mother. >> i drive by there all the time. i always look at the water. >> reporter: but it gave you a sense that maybe she is at peace? >> right, yeah. >> reporter: amy's family acknowledges that peace would not have been possible were it not for wendy huggy. what would you have to say to the huggy family? >> don't give up. >> never give up. >> something could still happen. >> reporter: do you think there's any hope that you'll ever know what happened to wendy? >> honestly, no, i don't. it's really, really a long stretch. >> it's a beautiful 17-year-old girl who just disappeared. where is she? what happened to her? >> reporter: but cold case detective lisa schoneman is not about to give up. >> i just came across a couple the other day, but it wasn't her. >> reporter: but you're not going to stop looking? >> oh, no. no, i'll keep looking. i'll find her. i'll find her. captioning sponsored by cbs captioned by media access group at wgbh access.wgbh.org >> he's christopher crowe of greenwich, connecticut. >> very prominent people were fooled by him. >> he's christopher chichester of san marino, california. >> to him, it was a game. >> he's clark rockefeller of new york. >> rockefeller abducted his daughter during a supervised visit. >> he was diabolical. >> it turns out he's wanted for questioning in this homicide case. >> the man who calls himself clark rockefeller has been charged with murder. >> reporter: what should i call you? >> i don't know, erin. what would you like to call me? >> on television, online, on the go and now on ipad. cbs news. after a gorgeous saturday, we are tracking an approaching winter storm that could put a big damper on your monday morning commute. two people are dead, a firefighter is hurt and a home is destroyed in a fire in arlington. a former fbi agent talks about new developments in the homicide. tonight there's an increasing focus on the pilots of that missing malaysian airlines flight. hello, i'm bruce johnson. after a beautiful spring-like day, snow is on the way for tomorrow. we've already declared monday a red alert day. erica grow in the weather center. >> it is a late winter storm. that's why it's so hard to determine just how much snow we're going to get. today was 70 degrees. so how are we going to get snow to fall when it was so warm today? cold air is going to rush in from the north and west as we head into the next 24 hours. the time for the storm, 6:00 p.m. tomorrow until noon monday. the main threat will be the accumulating snow. the main impact will be for that monday morning commute. and most of the moisture with this system will be to the south and southwest of the beltway. so that's where we're expecting some of the heavier accumulation totals. you can see that here on our forecast for the snowfall totals. you have two to 4-inches at the beltway. once you get south of that -- it includes most of the i-95 corridor south of the beltway and then the big bulls eye here of 6 to 8-inches is for the shown an doa valley. shouldso the lower totals will be further north because that cold air, that area of high pressure is going to suppress this storm a little further to the south. we're still waiting for the cold air to arrive. 29 in chicago. that's not bone-chilling cold, but it has to push south in order to allow us to get the temperatures below freezing. a look at your wake up weather forecast for tomorrow, we're still dry through the morning hours. mostly cloudy and breezy. rising through the 30s and 40s, temperatures not really going anywhere tomorrow afternoon. i'll explain why coming up. thanks erica. it's going to be a messy monday morning around here. get up with us. we'll be here at 4:00 o'clock in the morning with the latest weather and road conditions. two people are dead, 5 of their loved ones are homeless. this after their house was destroyed by fire. nikki ber dine was at that fire in arlington. >> the home is so badly damaged, firefighters say it's going to take a lot of work before they can actually get inside to determine a cause. that coupled with the fact that two people died here means this is going to be a very long investigation. >> i'm scared to death. i really want to know what really happened. >> reporter: the fear of the unknown was the first emotion this family dealt with today. >> i don't know if she's safe or not in there. >> reporter: two of the people living in this home were unaccounted for leaving the family to think the worst. rony parker was walking by when he spotted the flames. >> i saw a fire under the porch. i came banging on the door. the kids came out and the grandfather came to the door and went back in. they got grandmother in a wheelchair there. i never saw the grandfather or the grdmother come out. >> reporter: he called 911. >> i walked out and that's when the 2nd explosion happened. when i was inside, the lights were flickering. >> reporter: those inside a church next door rushed outside. >> we came out and my truck was on fire. the heat was so horrific, you couldn't get close to it. >> reporter: by this time, everyone in the neighborhood was standing on the street watching the house burn still waiting for answers, until the bad news was delivered. >> at the time, we have confirmed we have two fatalities in the house. >> reporter: the two victims have not been identified. a firefighter was hurt in the fire. i'm told he is going to be okay. in arlington. tonight, a man -- remains in a wheeling west virginia jail. 53 year old charles severance is scheduled to appear on monday. police arrested him on thursday after a look out was issued by the fbi. on wednesday, armed officers surrounded and searched his home in ash burn where he wasn't there. >> there was i think three marked cars and then a train of unmarked suvs, cop cars. >> charles severance bears a strong resemblance to the sketch of the man wanted in connection to the murders of nancy dunning, charles kirby, and ruthanne lodato. >> reporter: there are several things investigators are doing while 53 year old charles severance is being held in a west virginia jail. i talked to fbi agent who has extensive investigation experience. police are not calling him a suspect. they're not calling him a person of interest. what is he? >> he is a suspect, whether anyone wants to admit that or not. that's why they're investigating here. >> reporter: charles severance appeared before a judge, picked up by police on a warrant. mccarey says the interrogation process should be underway unless severance has a lawyer. >> where was he at the time of the murders, and then you can begin to weave into those questions that you know the answer to, those questions that you would like to know the answers to and see what you get. will either help eliminate him or firm him up as a suspect. >> reporter: investigators would be interviewing family and friends and looking at theal ex and dria murders that took three lives. transportation planner ron kirby in november, and ruthanne lodato in february. her father was a judge, her brother a retired judge. nancy dunning's husband was the sheriff. >> certainly you have the geography in alex andria. you have bullet fragments that have similar fragments. that's another thing. you have to -- the problem there is you begin looking for just confirm tory evidence, evidence that confirms. it has to be a well-balanced investigation. >> reporter: he says investigators want to be thorough and at the same time, if they can rule it out, do it as quickly as they can so they don't waste time finding