Night lynn will be right back. Nightline continues. Here again, juju the story of mandy is the story of a young womans disappearance from a tightknit, rural community. Its the story of a family devastated and a whole community devastated. It was a big deal. I was initially appointed sheriff in 2003. I went out and spoke with mandys mother, mary, and told her that i was going to make every effort, that we would solve this case. I dont think i ever believed, ever, that they would catch the guy. The murder of mandy was a mystery. A decadesold cold case that left a Small Community on edge. It was so out of the realm of anything we could have ever expected. Only solved by the combined determines of loved ones, Law Enforcement, even strangers. The unexpected, avenevery day i that would crack everything wide open nearly 30 years later and the shocking revelation of who committed the crime. Couldnt possibly imagine it would be somebody we knew. The family lived out in acme, a little tiny town down highway 9 in rural watt kkin county. Its rural. Not a lot out there, open roads, lots of cows. You knew your neighbor. You talked to your neighbor. Everyone that lived out there, even today, knows about mandy stavik, and what happened to her. Mandy had just graduated from high school. She was in her first year at central washington, at university. She came home for thanksgiving break. Mandy left her home on the day after thanksgiving,98 he run. It was kind of in the late afternoon. She had a daily route that she used to jog that took her down the road that her house was on, on strand road, down to the river and back. She went with their dog, kyra, a German Shepherd dog. It was an older dog but very protective of mandy. I was panicked the minute she didnt get home on time. And i was doubly panicked a few minutes later and the dog was there and she wasnt. Any kind of missing person call is a 911 call. It requires immediate response. And a deputy will go out and talk to the reporting party. In any investigation like this youre going to look at boyfriends, anybody they might have had trouble with. Mandys boy friend was cleared after he gave a police statement. In any investigation like this youd have to figure out who mandy was, what she was about. She was very everything. I dont know whether there are words to describe her. Mandy loved anything athletic. She could do things that i could never do. She could jump on a horse bare back and take off running across the field. She loved softball, she loved track. She loved baseball. She loved basketball. Everybody liked her, so she wasnt the typical student that, you know, may have one or two enemies. The search went on for three days. She was found on the third day. Mandy was found on the south fork of the river, probably close to five and a half, six miles from her house. There was a bend in the river and some debris, and the body was just hung up in the debris there. I saw her body, she was face down. She was just kind of suspended, just a little bit off the bottom. There was a branch there that was some debris that prevented her from floating any further downstream. She was naked except for shoes and socks on. The tennis shoes match the description. The detective that was with me dispatched himself in a quick fashion to get to the family home to let her know we had found her. I wouldnt wish this on even my worst enemy. There is nothing worse, theres nothing worse than losing a child. The medical examiner determined mandys cause of death to be drowning. Shed suffered a head injury and had been sexually assaulted. They took dna evidence from mandys body. They created a dna profile of both mandy and an unknown male. Time and time again, they would have a person of interest. They would question that person. But something would rule them out. They had a good alibi, or ultirid match. This case dragged on. Becomes a cold case. But after, you know, ten, 15, 20 years, you say ah, its never going to be solved. Reporter in 2013, a tip draws investigators attention to mandys former neighbor, tim bass. The case had never, never left the thoughts of mandys friends. So two women were talking about the case and talking about what a strange person tim bass was. And they decided, we should talk to the sheriffs office. They should look at him. Tim bass came up as a suspect. In 1989, tim bass lived on one side of highway 9 on strand road. And mandy lived on the other. He was a loner. He was a loner. He was quiet. May my impression was he was kind of an odd ball. He moved out of the area shortly after the murder. It was in january of 1990. He had quickly gotten married and moved to everson. Im gina malone and tim bass used to be my husband. He was very controlling and always told me what to do, what i could wear, what i couldnt wear. Who i could talk to. Who i couldnt talk to. Whenever hed get mad, he would, like, come towards me like this with his fist. He did shove me against the bathroom wall once. And bruised my back. 2010, gina had filed for a Domestic Violence protection order. That case was later closed, because she rescinded the Domestic Violence order, and they stayed married. Reporter when detectives visited gina and tim in their home they asked tim to give a dna sample. Tim said he wasnt going to give us a dna, that he didnt trust the police, and its kind of like, okay, whats plan b. 2017, since i didnt get a sample, we knew wed have to do it surreptitiously. He was a route delivery person for franz breads. We wasnt to franz and i met wagner for the first time. I met tim bass when he came to work with me. Reporter if detectives could acquire an every day item with his dna on it, they could run it through the lab to see if it matched the dna found on mandys body. I said you want a water bottle . I can get you a water bottle. I need to know. We cant tell a person to get evidence for us. But if they were to bring something to us, we could take that from them and use that. Thats not against the law. Nobody asked me to do it, i 100 volunteered to do it. If something happened to my daughter, id want someone to help me, and the thought of her mom never having the answer of who did that to her daughter, if coy help her find that peace, i wanted to do it. She watched tim. They got a water cooler at their office. And he drank out of a plastic cup and threw it away. He threw it in the garbage in front of me, walked past into the bathroom, and i looked in the garbage, and my heart was like, hmm, beating out of my chest. And i grabbed it, and i put it in my desk drawer. I think i waited a little bit, and i texted the detective. I couldnt get it back to the office quick enough and down to the lab quick enough to have it tested. Reporter but would tim bass be a match . And would mandys mother find the justice shes seeking . 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When tim bass was taken into custody at his workplace, he agreed to talk to us down at the station. Just like youve seen on t. V. , on those shows youve watched, i just have to advise you of this before we talk to you any further, so you have the right to remain silent. Tims demeanor was flat. He didnt show a lot of emotion, tried to act like a lot of disbelief, like, no, i didnt have anything to do with this. Youve got the wrong person. Ive never had any intimate relationship with her. Ive never even kissed her. Hes testing the waters to see whether or not they actually have his dna versus them telling him a ruse. Howd that come about . My dna, that you guys got . I ran a sample. I dont remember giving dna. Im sure in his mind, he was thinking, ive gone through all these measures to make you guys didnt get my dna. How did this happen . Where did i screw up . Just tell me. If you just did it sneakily, you did something weird. Well, of course i did. Okay. Well thats all you need to tell me. The point being is if i didnt have something of that nature, you wouldnt be sitting here. Right. I think once he realized we actually did have his dna. Then, he switched, well, i wanted to tell you a long time ago but i just didnt trust you. Ive been told not to say stuff. Ah, to hell with it. I cant do this. I cant. I trust you guys. I cant. If this bites me in the or this is not what im supposed to do, then whatever. I dont give a i slept with her. He completely does 180 degree turn. And at that point says, yes, i slept with her. Tim bass told us a story that he was having a secret relationship with mandy. And thats how he accounted for his dna being found. Theres no way my sister would have had a relationship, a physical relationship with tim bass. She was way, way, way out of his league, to put it bluntly. You are under arrest for the murder of mandy stavik. The arrest occurred on december 12th, 2017. I filed charges, charged him with murder in the first degree. Shortly after mr. Bass was arrested, i drove out to mary staviks home. It was her 81st birthday that day. It was. It was on my birthday that he knocked on my door. Kind of nice birthday present. She was overcome with emotion, and i think we all were. But the case wasnt closed yet. Tims wife gina tells police she spent that entire day with tim. When you went to his house that day, was tim there . Yeah. He was there the entire time . Yeah. Despite the alibi, the case still went to trial, three decades after mandy had been found dead. To me, a trial is where i really love to be. All rise. Finally getting underway was such a relief to me. The evidence will show that mandy was abducted, and we can tell you where it happened. My theory is, is mandy set out to do her Five Mile Run with the dog. About a quarter of a mile from her house where theres a wooded area, its very secluded and thats where tim is waiting for her to run by. He grabs her, gets her in the car. She was taken approximately six miles south to an isolated location where she was raped. I think she tried to get away by running away, naked, wearing only her shoes and socks. He caught with her and hit her in the head and knocked her out. Either struck in the head or pushed into a tree and then she was placed in the river where she was drowned. Timothy basss Defense Attorneys were trying to say that just because his dna matched that found in mandys body, it doesnt necessarily mean that he killed her. Did you ever see her with tim bass . No. One of the things i did with the witnesses i called, i asked each of them if they had ever seen mandy with tim bass. No. Never. We wouldnt hang out with him at all, ever. The main point was they didnt know each other, they didnt hang out together, they didnt run in the same circles. The state would next call gina malone. Were you previously married to the defendant tim bass . Yes. I filed for divorce. I only saw him one time in jail. By the time, gina bass walked into that courtroom, theres a lot of change in her life. Gina came forward and said that her alibi that she originally told us was false. I believe gina was providing his alibi to protect herself and once she felt secure and safe herself, then she could actually tell the truth. After the police came, he told me that i need to lie and say that i was with him that day. And he said, otherwise, im gonna go to prison. I felt like i just have to agree with everything hes saying because if i dont, i could be next. I wasnt a strong person back then. I just was very weak. But i shouldve gone with my gut instinct. The day the verdict was read, the courtroom was packed. All rise. I understand that the jury has reached its verdict. We have. We the jury find the defendant Timothy Forrest bass guilty of the crime of murder in the first degree as charged in count one. Tim bass was sentenced to nearly 27 years in prison. I thought, hooray. The guys going to get whats coming to him. I give Dave Mceachran a lot of credit. He is something. And bless his heart, he told me day one that he was not going to give up until this was finalized. And we owe him the credit. Up next, the moment Mandy Staviks mom meets the woman who helped solve the case. We switched our detergent to one thats clean. And if you make the switch youll see what we mean. Tide purclean, because its made with plants. Tide purclean, gets stains out his pants. Tide purclean, it has nothing to hide. Its made with plants and has the cleaning strength of tide. The first plantbased detergent with the cleaning power of tide. Our because of smoking. Ital. But we still had to have a cigarette. Had to. But then, we were like. What are we doing . The nicodermcq patch helps prevent your urge to smoke all day. Nicodermcq. You know why, we know how. Its how we care for our patients like job. His team at ctca treated his cancer and side effects. 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Youre welcome. Person i wanted to meet for a long time is mary. All of it. I would do it again for her. A woman i never even knew. Mandy was special. She really was. I dont know why she was how she got to be the way she was. Thats just the way she was. I kind of learned that the living have to go on to honor the goodness in what youve lost. They took 12. 8 billion from big tobacco. Juul marketed mango, mint, and menthol flavors, addicting kids to nicotine