He was devastated. Reporter the most ominous clue . Up on the wall, to the left of where heidis body was, was a number one. Shes number one and get ready cause. Right, yeah. Here comes trouble, huh . Exactly. Reporter it wasnt a breakin. The windows, the door nothing was broken. Did the killer have a key . The question always was, how did the person get into the house . A decade later, in a state 1500 miles away, detectives finally found their answer. We got a dna hit. Reporter and more questions. We knew there was more to this story than just some guy coming from colorado to commit a murder and go back home again. Did someone closer to home want her dead . Youre 99 sure that he had something to do with it. But theres no smoking gun. So many secrets still to be revealed. I know more about this than ive said. Reporter and one more killer still on the run. He knew what was in that house. He knew what he was doin. Doesnt get any worse than that. Hello and welcome to dateline. Heidi had been living with her boyfriend, steven cook, in a baltimore suburb for about two years. There were whispers of a wedding, but those plans were tragically cut short when steven arrived home to a scene that was both brutal and bizarre. Heidi sprawled on The Living Room floor. Who would want her dead and why . Heres Dennis Murphy with indiscretion. Reporter she was a bubbly woman in her early 20s just looking for a clean break. Heidi bernadzikowski a baltimore pool league ace had, in recent years, endured some tough times. But now the shots were starting to drop a steady job as a receptionist. A boyfriend she could take to meet the parents. Talk, even, of a Summer Wedding in las vegas. And then it was game over for heidi just like that. Someone had made their way into her rowhouse on a thursday night in april back in the year 2000 and killed her in most brutal fashion. Baltimore county 911. Reporter my girlfriends been murdered. What happened . Was she shot or no, she, she, shes cut. Her throat, her throats cut. Any parent opens a door, 6 a. M. , theres two cops standing there, you know thats not good. Reporter it was a murder case that wasnt going to be solved in a few hours, or a few weeks, or even a dozenyears. The heidi Murder Investigation would go stone cold until one day in a matter of hours really everything became clear. And how strange and terrifying it all turned out to be. When donna and walter bernadzikowski met at a church social, talk of a family even preceded the engagement ring. He used to scare the girls away by saying he wanted 12 children. And i said well, i always thought i wanted to have 12 children. He says, oh my god. Reporter they didnt have 12 but this devout Roman Catholic couple did raise their five in a baltimore, maryland suburb. Heidi the only girl in a sea of brothers. When i hear that, i think poor heidi. Yep, yep. Reporter growing up with all those boys. She wasnt treated like she was a little princess, thats for sure. Heidi grew up to be a happy, outgoing, athletic girl, surrounded by friends. It was a noisy, loving family with strict rules. Everyone at the table for dinner. Mass on sunday and no back talk. Heidis brothers frank and harold. True that your mom was known to wash out a potty mouth with a bar of soap. Or was that is that a metaphor . I got it. True. Reporter did you . True. Yup, yeah. They were very strict. Definitely had a bar of soap from time to time. Reporter as she grew into her late teens heidi started to bristle under her parents strict house rules. By 19, she the next to youngest became the first to leave the family nest. But the grass wasnt greener. Right away, reality offered up a deadbeat roommate; and a succession of low paying jobs that evaporated like the morning dew. And yet she could always count on her girlfriends to buoy her up. And it was one night with her bffs shooting pool, she caught the eye of a guy holding a cue stick. It was Stephen Cooke. They were shooting against one another. And he noticed heidi in the bar. Reporter kim is Stephen Cookes sister. The first night they actually went home together. And three days later, they moved in together. Reporter fast. So its pretty. Reporter fast romance. It was really fast. Really fast. Reporter stephen was 5yearsolder than heidi. His sister says he could be quiet and shy but always wanted to be around heidi. They did everything together. I dont think they that they really did much without each other. Reporter in 1998, stephen and heidi moved to this Rental Townhouse in dundalk, maryland. Stephens dad steve sr. Says after living together for nearly twoyears, the couple was talking about taking the next step. Was it your understanding steve, they were going to get hitched . Yes, in vegas and every time i talked to em thats that was their plans. It never changed. He loved her. Reporter the timing seemed good. Heidi had just gotten a promotion at the Insurance Company where she worked. She was finally a 9to5er after years of temping. She was just gettin started or gettin settled into a niche whenwhen things happened. Reporter strange things that rattled heidi. In april of that year, it appeared someone was trying to break into their townhouse there was chipping around a lock on their basement door. Looked like the doors had been monkeyed with . Yes. Reporter not long after that discovery of mischief on the locks, a stranger knocked at the front door one night saying he was forming a Neighborhood Block Watch. He scared heidi so much that she told friends. And described the stranger as africanamerican with a tattoo. Stephen demanded new locks and keys from the townhouse management. They were installed on april 19th, 2000. The very next evening was when it happened. Are you sending somebody . Yes, i am. Just send somebody. Im going to. Just stay with me okay . Reporter an officer dispatched to their home saw heidi on The Living Room floor. Her boyfriend leaned up against the wall, cradling her, and crying uncontrollably. It appeared shed been strangled, her throat so severely slashed her blood had dripped through into the basement. And there was Something Else something mansonesque, scrawled on the wall in red lipstick above heidis body was the number one. Coming up a possible suspect. Im thinking maybe this is our guy. Butcher, heidi is killed with a knife. When indiscretion continues. Knife. When indiscretion continues. Because dupixent targets a root cause of eczema, it helps heal your skin from within, keeping you one step ahead of it. And for kids ages 6 and up, that means clearer skin, and noticeably less itch. Hide my skin . Not me. By helping to control eczema with dupixent, you can change how their skin looks and feels. And thats the kind of change you notice. Hide my skin . Not me. 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Trelegy wont replace a Rescue Inhaler for sudden breathing problems. Tell your doctor if you have a Heart Condition or high Blood Pressure before taking it. Do not take trelegy more than prescribed. Trelegy may increase your risk of thrush, pneumonia, and osteoporosis. Call your doctor if worsened breathing, chest pain, mouth or tongue swelling, problems urinating, vision changes, or eye pain occur. Take a stand and start a new day with trelegy. Ask your doctor about oncedaily trelegy, and save at trelegy. Com. Kidney alert for Type 2 Diabetes forty percent of people with Type 2 Diabetes will develop chronic kidney disease, or ckd. Did you know ckd can lead to Kidney Failure and dialysis . Kidney alert ckd often has no symptoms until its too late help protect your kidneys. Call your doctor for a uacr test. It shows one of the earliest signs for ckd. Visit kidneyalert. Com reporter a female Police Officer was the first on the awful scene. Shes seeing Stephen Cooke, Holding Heidi Up against the wall. Hes got her wrapped in his arms. Reporter Stephen Cooke, Heidi Bernadzikowskis livein boyfriend of nearly twoyears, told the arriving officer that he came home that night only to find an apparently lifeless heidi in their living room. Nonetheless, he says he tried cpr. At 8 58 p. M. Hed called 911. Are you sending somebody . Yes sir, theyre on their way sir ok . I want you to stay with me. No, no i cant stay with you i gotta go with her. Reporter Baltimore County homicide detectives al meyer and gary childs arrived later that night. It appeared to them heidi had been strangled. It was obvious her throat had been deeply cut with something sharpedged, probably a knife. When you get to a scene like that, detective does it speak to you . Does it explain itself at all what happened here . Well, it was kind of an odd scene. The living room of the house was no Real Furniture to speak of. Up on the wall to the left of where heidis body was, was a number one written on the wall. So found that obviously to be odd. Shes number one and get ready cause right, yeah. Here comes trouble, huh . Exactly. Reporter those first few hours left investigators wondering was this the first signature of a budding Serial Killer . Was there going to be a number two . Or was it Something Else . The house was tossed, yeah ransacked. Youve got a potential motive of burglary. And youve got the other motive on the wall of a serial murderer. Reporter twentymiles away, walter and Donna Bernadzikowski got a knock on the door at their severna park, maryland home. It was the police. And he says, you have a Daughter Heidi and, yes. You know, and i said, you know, whats the matter . You know, shes been in an accident . What you know, whats going on . And he said, heidis dead. It, it was, you know, was quite a shock and i just started like pinching myself ive got to wake up from this dream. This has gotta be a dream. I think our whole world just changed. Reporter a short time later, stephens sister, kim, got a knock too. I remember runnin into the bathroom and getting sick. And i was kind of i couldnt do anything. Reporter heidis boyfriend stephen, meanwhile, had been down at a Police Station the whole time being interviewed. Officers snapped this picture. His clothes bloodied he said from trying to perform cpr and then cradling heidis bleeding body. Now, how much did you know about him or the victim by that point . Really a lot. We just knew they were in a relationship. The relationship was good. Reporter husbands and boyfriends are always persons of interest, but Homicide Investigators say stephen was cooperative. He told them how after his shift ended at a local lowes, he picked up heidi from her job in the car they shared a 1994 red honda civic. It was 5 45 pm, he thought, when he dropped her off at their home. It was, he said the last time he saw her alive. The detectives put together a timeline for the boyfriend whod run a Bunch Of Errands after dropping heidi off. A stop at the atm, followed by a haircut, an oil change at a jiffy lube and then a swing by home depot for a Plumbing Piece needed to repair his sisters sink that night. He had time stamped receipts for virtually everything and turned them over to the police. Hes got a very solid alibi for his whereabouts from the time he left work until he picks up the phone and calls 911 . He does. But you still have to take into account, you know, it doesnt take long to do what had been done. You know, shes strangled and her throat is slit. You know that could happen in a matter of seconds. Reporter after about 6 hours of police questioning, stephen went home. His sister remembers him being a wreck. I could certainly tell my brother was just a mess. He was devastated. I could see in his face that he was, just looking at him. That he was been cryin. Reporter in the days that followed, al meyer and other investigators felt a Serial Killer unlikely the robbery gone bad theory too because there were no signs of a forced entry. But dna was found under heidis fingernails presumably from her killer. Their hopes were soon dashed however when the sample turned out to be virtually useless. Detective gary childs. You had a mixture of dna from the victim and you had a mixture of the dna from the suspect. And the technology in those times was that you couldnt separate it. Reporter but Detective Meyer did have one suspect he was very interested in finding, that suspicious Neighborhood Block Watch person. The dark skinned man with a tattoo whod scared heidi at her front door. And one Person Of Interest was a local butcher. Reporter Terry Gilliam worked with stephens sister at a safeway just miles from heidis house. Im thinkin, okay. Hes african american. Im thinkin, maybe, you know, maybe this is our guy. Butcher, heidis killed with a knife. Reporter investigators theorized a connection through stephens sister. Theyre looking for somebody that comes to the door, did you ever go to heidis door and knock on the door . No. Saying youre from the Block Watch Association . No. Actually, i dont even know where heidi lived at. No, never knocked on her door. Reporter but the cops wouldnt just accept the butchers denials and be done with him, there were other reasons to dig deeper, including his work time card. A time was changed on one specific day. Its the day of the murder, one of his times is handwritten in. So the so the only day of the month . Everything else is machines exactly. Now i have him not being able to account for himself the day of the murder. Reporter and there was Something Else heidi herself had said the suspicious block watch person had a tattoo on his left arm. Do you have a tattoo on your arm . Yes, i do. On your left arm . Yes. Terry, let me ask you now did you kill heidi . Definitely not. Reporter officials werent done yet with the butcher and heidis boyfriend Stephen Cooke remained a suspect too despite his receiptheavy alibi. A lot of time starts to go by. Doesnt it . Too much. Reporter at first months go by. Then years. More than a decade. No arrests. But there would be one advantage to the passage of time breakthroughs in dna technology. And that finally gave police a suspect. Who it was shocked everyone. Coming up its always the husband or the boyfriend, right . But that didnt seem to be where this investigation was going. The headline here is Stephen Cooke is not the guy . Right. When indiscretion continues. N continues. New vazalore is the first liquidfilled Aspirin Capsule clinically shown to cause fewer ulcers than plain aspirin. Vazalore is designed to help protect. Releasing aspirin after it leaves your stomach. Where it is absorbed to give you the benefits of life saving aspirin. To help prevent another heart attack or stroke. 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Enjoy rewards like sing family fun nights rent sing for 1, then belt out all your favorite tunes from the movie with sing karaoke. Plus, see sing 2 in theaters with buyonegetone free fandango tickets. Join over a million members by signing up for free on the xfinity app. Our thanks. Your rewards. Reporter as the years rolled by, the Heidi Bernadzikowski murder case got colder and colder. Detective al meyer was frustrated. He was promoted out of homicide but he never forgot the case. Even when he was in another unit, he would come back up to the Homicide Unit and go through the file. Never got squirreled away, huh . No, no. Never. Yeah, he never he never let it go. Reporter heidis grieving family was trying to get on with their lives, remembering her on her birthday by eating her favorite shrimp alfredo, but Family Events were hardly the same. You couldnt fully enjoy these special occasions because youre always painfully aware that you had an empty chair. You got an empty chair, that she should be there and shes not there. Reporter heidis boyfriend Stephen Cooke was trying to move on with his life as well he married, had a child, and landed a steady job with veterans affairs. Hes got a normal life for the first time in a long while, huh . He does. Things are lookin pretty good for him. Reporter then, in 2011, eleven years after heidis murder, meyer rejoined the Homicide Unit and once again cracked the file. This time, he and veteran Baltimore County detective gary childs got an idea. Technology had progressed and we knew now that theres a possibility that heidis fingernails may contain some physical evidence. So whats the thought, lets run it again, see what happens . Yeah. The thought was to resubmit. Reporter to their surprise, the criminal database spit out a match. We got a dna hit. I couldnt believe it. Reporter but the hit wasnt for anyone in heidis known circle, even in her geography. It was a name completely off the radar, from a state over 1,500miles away. They tell me its this guy, Alexander Bennett from colorado. Colorado . And im, like, wow, thats not good. Baffled detectives started to dig. They called the colorado authorities and learned bennett was an unlikely suspected killer. In his early years, he showed promise as an opera singer. Performing recitals and winning a scholarship to the prestigious Manhattan School of music. After moving back to colorado though, hed gotten into some smalltime trouble. But then he did something just plain crazy. Hes a pretty talented guy but he had some issues with some people he hung with and one of these issues was with a friend of his named grant lewis. Reporter in 2003, bennett and grant lewis had been arrested in a doozy of a scheme. Theyd called 911 and said that a friend of bennetts wanted to bomb the courthouse. But they went further, building a real bomb and planting it in his house. The bomb squad was dispatched and that friend, hauled down to the station for an interview. Theyre grillin him pretty hard cause thats a kinda serious crime. One of the detectives ultimately lets him listen to the 911 call and he recognizes grant lewis voice. So its not all muffled or disguised or no. No, its just he said, thats thats grant lewis, i know him . Yes. Reporter within days, lewis and bennett confessed to the whole thing. Building the bomb, breaking into the house, even uploading bombrelated materials to the buddys computer to ensure hed be arrested. All so that friend, who bennett said beat him up, wouldnt notice that theyd made off with his jeep. So its all a hoax, this elaborate caper to plant an a explosive device in order to get him outta the house so they can steal the car . Yes. My word is harebrained. Whats yours . Yeah. Double harebrained. Reporter Alexander Bennett was sent to prison and required to give dna. Now, years later, that dna was tying him to heidis Murder Back East in maryland. For baltimore prosecutors Garrett Glennon and matt breault, the dna was an enticing lead but far from definitive proof. It was enough to say it looks like it came from him, you know . But we cant say its definitively his. So there was more investigation to do. Reporter so, the detectives went to work, looking for another connection between colorado native Alexander Bennett and the maryland murder. All the usual computer searches failed, but when Sergeant Meyer had the Maryland State Police mine an offline database. I get this phone call from the trooper and he tells me. He said, i got Alexander Bennett Somebody Running A wanted check on him march 30th of 2000. A maryland officer. In maryland. Im thinkin, holy cow. Reporter three weeks before heidis murder, an officer had spotted Alexander Bennett walking down a baltimore highway. When a wanted check is run by a patrolman or an officer that check remains in the computer forever. How important was that . Incredibly important. Reporter Detectives Meyer and childs hopped a flight to denver. It was time to meet this Alexander Bennett. Coming up a suspects story, a surprise to even these experienced detectives. Ive got to tell you its strange. Thats why it is strange. When indiscretion continues. Strange. When indiscretion continues. St drive works. They give their customers seven days. And if they dont like it, they give em their money back. Wait, they take the car back . Thats crazy what if it was driven by like a zookeeper . Or a mud wrestler . Or a guy whos on the outs with the missus and he just needs a place to sleep for seven days . Yeah. vo buy your car online. Love it or return it. With carvana. When a truck hit my car, the Insurance Company wasnt fair. I didnt know what my case was worth. So i called the barnes firm. I was hit by a car and needed help. 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But investigators couldnt figure out the connection between two people who lived more than 1,500 miles apart, so they hopped on a plane to ask their suspect. Once again heres Dennis Murphy with indiscretion. Reporter in january 2012, two Baltimore County detectives flew to denver, colorado. Their mission to track down Alexander Bennett, the man whose dna had been tied to Heidi Bernadzikowskis murder eleven years after the fact. Dna is a good piece of evidence. But we wanna find out if Alexander Bennett is really a part of this. Reporter a day after their plane was wheels down, Detective Childs was facetoface with their target. Alexander, right . Mmhmm. Im gary childs. How you doing . Reporter at first, the detective kept it vague, trying to confirm that bennett had indeed been in baltimore at the time of the murder. The year 2000. Bennett said he was. Hed spent about a month on the streets there after being ditched by some friends on their way to a concert. I gotta tell you thats strange. Thats why it is strange. Real strange. And then not to remember anybody you stayed with or hooked up with. Reporter then, the detective played his hand. Laid out the reason for his visit. This girls fingernails were taken at the time of her death. And under her fingernails is your dna. Now theres no denying it. Reporter but bennett did have an explanation. And it had nothing to do with committing murder in a house. He remembers a confrontation that he had in a bus stop with a female in maryland, in baltimore, right around the time of the murder. I got kinda scared because, um, you know i was trying to fight back. And i think i hurt her. Im not sure. Reporter the detective didnt buy it. And thought hed use bennetts story to his advantage. He presented bennett with several photographs a Technique Police typically use to help identify criminals. Except this time, he was asking a potential killer to identify his victim. Could bennett pick out the girl from his supposed fight . Heidis picture was included. He knows that he cant give this explanation about havin this fight in the bus stop and pick some other girl. So our belief is that if we show him these pictures, that he will pick her. And he does. It also too, kinda looks like her. Reporter there was one more crucial detail. Remember the Neighborhood Block Watch guy who frightened heidi . The one with the distinctive tattoo . Do you have any tattoos on your left arm . Yeah. Can i see it . When i saw the tattoo on his arm and he picked heidis picture out, i knew it was him. Reporter he was the block watch guy . He was the block watch guy. Reporter but they didnt have enough evidence to book him. So they decided to call in bennetts buddy from that crazy bomb plot, grant lewis, to see what he knew. And lewis was nervous. Sorry if im shaking. I was a kinda shaken up. Reporter he was evasive about his friends time in baltimore but the detective didnt buy his story. Then, because lewis had an outstanding warrant, the colorado authorities arrested him. The next day, Detective Childs kept pressing. I think you dont want to tell me certain things because you dont want to hurt a friend of yours. But what im trying to explain to you is nothing you say hurts him because whats done is done. Reporter at last, grant lewis cracked. He divulged a drunken conversation the two had down by a river after bennett got back. He said i hurt someone bad. And i looked over at him and i said i dont want to know. And he said i think someones dead. I think thats how he said it. I think someones dead. And then he said i knifed someone. Reporter that was it. Corroboration. Twelve years after heidis murder, Alexander Bennett was charged. He was extradited to maryland to stand trial. Heidis Brother Frank got the news from their dad. It was another one of those things that just brings you to tears, just because you all that comes flooding back in. Its such a great feeling to feel like finally, somethings happened. Reporter Stephen Cookes family was relieved as well. Thered been such a cloud of suspicion around him for so long that news that someone else had been arrested for his girlfriends murder felt like vindication. I was just gosh, i was ecstatic. I was, wow, this is great. Reporter this is relief. Yes. Reporter this is what weve been. Finally. Reporter sayin for years. Its not Stephen Cooke. I was so excited for my brother. I was just so happy. He can finally put this behind him. Reporter twoyears later, in march 2014, both stephen and heidis families converged on the Baltimore County courthouse for the start of Alexander Bennetts trial. Grant lewis was headed there, too. Hed been flown in to testify. Hes gonna be your star witness. He absolutely. Reporter but for detectives, the idea that bennett killed heidi all on his own had never made sense. They held out hope that bennett would come clean, but he maintained his innocence. Then, came the morning of jury selection. Gary and i are out, getting breakfast. And garys phone goes off. And he looks down at it. He looks up at me. And hes like, alex wants to talk. And im, like, wow. Here we go. Reporter a hearttoheart with his mother had convinced bennett to spill everything. Prosecutor garret glennon. She basically told alexander if he did this, it was time to come clean. That jesus would forgive him. Reporter what they call a Come To Jesus Moment was what. It appeared that way. Reporter you were beneficiaries of, huh . It appeared that way. Reporter bennett confessed that he killed heidi. But he hadnt acted alone, he said. He had an accomplice. And that person was who else, but the states star witness. He and grant lewis, as in the bomb scheme had developed an idea as being contract murderers. Reporter grant lewis is the brains of this operation . Yeah, it was a lack of brains. Reporter grant lewis had been sitting in a hotel room preparing to testify. Now detectives brought him in and turned the tables on him. Grant, youre in the middle of this thing. I am not in the middle of this thing. Reporter at first, lewis denied involvement, but as the detective revealed details from alexanders confession, he started to open up. Did you send him to baltimore . I didnt send him to baltimore but i know more about this than ive said. Reporter lewis ultimately admitted to being involved in a Murder For Hire scam but said bennett was never supposed to kill anyone. Only to get the upfront money before turning the person who hired them over to the fbi. Did you believe that story . Not in the least. Reporter now do you read grant lewis his rights . Yes. And the cuffs went on. Reporter but there was still one major detail left who hired them to kill heidi . What really happened the day heidi died . Detectives are about to get a firstperson account from the killers. Coming up i was making sure if she say alive. I didnt know. Thats when i had the knife. When indiscretion continues. Knife. When indiscretion continues. What can i du with less asthma . With dupixent, i can du more. Beginners yoga. Namaste. Surprise parties. Aww, you guys. Dupixent helps prevent asthma attacks. For 3 . So i can du more of the things i love. Dupixent is not for sudden breathing problems. Its an addontreatment for specific types of moderatetosevere asthma that can improve Lung Function for better breathing in as little as two weeks. And can reduce, or even eliminate, oral steroids. And heres something important. Dupixent can cause serious allergic reactions, including anaphylaxis. Get help right away if you have rash, shortness of breath, chest pain, tingling or numbness in your limbs. Tell your doctor if you have a parasitic infection, and dont change or stop your asthma treatments, including steroids, without talking to your doctor. Are you ready to du more with less asthma . Just ask your Asthma Specialist about dupixent. Reporter for more than a decade, detectives tried to untangle the mystery of 24yearold Heidi Bernadzikowskis brutal murder. On the morning of his own murder trial Alexander Bennett unexpectedly confessed to an opportunistic plot. He was really a cashforhire hitman. All right alex, you all right . Reporter bennett agreed to a deal. Tell the truth to investigators and avoid the possibility of getting sentenced to life in prison. Interviewed by Detective Childs, bennett laid out the bonechilling details of heidis murder. Grant was discussin about receiving money to kill somebody. Reporter according to bennett, he and lewis had been brainstorming ways to raise seed money for a nightclub. So lewis placed a coded message online, advertising Discrete Housecleaning services. By, discreet housecleaning, grant lewis apparently meant and hoped that someone out there on the internet would understand that to mean that they were hitmen. Reporter bennett says a client did respond to the ad and offered 60,000 to kill heidi. I know from the client, from the person, you know, emphasized to grant and grant emphasized to myself that it needs to look like an accident. Reporter bennetts role was the muscle to do the actual hit. Lewis the middleman communicated with the client and organized everything. In late march 2000, bennett arrived in baltimore from denver. He says he waited for the signal to act. In the meantime, he scoped out his victim breaking into heidis home by tampering with the locks, then posing as that Neighborhood Watch volunteer who so scared heidi. I do remember her answering the door. Reporter did you go to the door to talk to her more than once . It was just that one time. Reporter just the one time . On april 20th, bennett says he heard through lewis that the plan was a go. After getting into heidis house he hid behind the front door. Now my plan was to just try to get her, and like, still make it look like an accident like, maybe snap her neck or somethin to look like she fell down the stairs or somethin. Reporter heidi walked in through the door, and bennett says he pounced. When she came in she saw me, panicked, i panicked, and rushed at her at the front and, you know, try to muffle her scream. I was makin sure if she was alive. I didnt know. Thats when i had the knife. And to make sure, had cut her throat. Reporter then, bennett said he wiped the place down. And to throw forensics off he ransacked the bedroom and used heidis lipstick to make that number one on The Living Room wall. After that, bennett says, he fled. Thats it . Thats it. Reporter heidis dead. Heidis dead. Reporter Detective Childs pressed who was the client . He showed bennett a photo array of six suspects. Assistant state attorney matt breault. He immediately separates four photographs and says, its definitely not these four. And hes left with two. And he takes a couple of moments and stares at them. And eventually, he says, yes, this is him. I remember him. This one. I recognize him as the boyfriend. Reporter bennett picked out Stephen Cooke. Heidis boyfriend was arrested for first degree murder. Deep in our hearts, we all had a feeling that he had something to do with it. Reporter stephens trial began in june 2015. He pleaded not guilty. Glennon and breault had the task of convincing a jury that stephen was capable of orchestrating a cold murderforhire. Their case would rely heavily on the word of one man the killer himself, Alexander Bennett. You really had to believe this guy, bennett . Absolutely. Reporter your case was gonna rise and fall on that . He was going to be the star witness against Stephen Cooke. Reporter bennett told jurors the same story he told investigators how he killed heidi. Video cameras werent permitted, but bennetts testimony was audiotaped. He decided to confess he says because of his faith and for heidis family. I wanted to be a human being. I wanted to give a family some type of peace. I wanted to have faith enough and to grow up into a man and to accept and take responsibility for what i did. Reporter but the question still remained. If Stephen Cooke had planned heidis murder, why had he done it . According to stephen, they were in love and planning to marry. But some of heidis friends testified that she was so miserable in the relationship, she was preparing to leave. She had asked a friend of hers for a small loan for an easy Storage Facility in an effort to move out. Reporter and the real reason for the murder, the prosecutor told the jury, was pure and simple greed. 700,000. Two months before heidis death, stephen and heidi had taken out hefty Life Insurance policies on each other. Do i wonder why an hourly employee at a Hardware Chain is buying you should. Reporter almost a Million Dollars worth of coverage . As we explained to the jury, they had one car between them, which was hers. A red civic. They are not married. They didnt have any children. And they really didnt have many belongings. There really wasnt anything to insure. Reporter so once they buy the policy, its tick tock. Correct. Reporter heidi had no idea time was running out for her. No idea what was going to happen when her boyfriend dropped her home that night. But, according to investigators, stephen knew there was a hired killer in the house. He set the wheels in motion. Reporter driving her home to her death. He knew what was in that house. He knew what he was doin. Doesnt get any worse than that. Reporter but the defense would have an answer for those Insurance Policies and everything else. And the person to explain it all to the jury would be Stephen Cooke himself. Coming up the defense, just how strong was the prosecutions case. All you have is a confessed murderers words. Thats all. When indiscretion continues. All when indiscretion continues. With rybelsus®. rybelsus® works differently than any other diabetes pill to lower blood sugar. In all 3 of these ways. Increases insulin when you need it. Decreases sugar. And slows food. The majority of people taking rybelsus® lowered their blood sugar and reached an a1c of less than 7. People taking rybelsus® lost up to 8 pounds. Rybelsus® isnt for people with type 1 diabetes. Dont take rybelsus® if you or your family ever had medullary thyroid cancer, or have multiple Endocrine Neoplasia Syndrome type 2, or if allergic to it. 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You u Mit Bebe Sprisised the Barnes Firm Injury Attorneys call one eight hundred, Eight Million reporter Alexander Bennett, the admitted killer on the stand, had spilled out a gruesome account of the plot to murder heidi. Stephen cooke, he testified, had hired him via the internet to kill his girlfriend. The motive . The boyfriend wanted her Life Insurance payout. 700,000 bucks. But stephens Defense Attorneys conceded nothing. They thought the prosecution had a weak case overall and one big problem in particular. Its star witness, Alexander Bennett. Bennett obviously had something to gain by changing his story. Our old friend, quid pro quo. Plea deal. Reporter Tara Lacompte and Breon Johnson were stephens Defense Attorneys. They said before the colorado mans socalled confession, bennett faced life in prison without the chance for parole. But once he cut a deal with the state to testify he could look forward one day to walking free. So hes singing for his supper here . I couldnt have said it better myself, exactly. The less time he would spend in jail for his own deeds. Reporter the defense argued another glaring hole in the prosecutions case was the lack of any physical evidence tying stephen to the crime. The computer in the house that stephen and heidi shared, was never taken in as evidence. Its a digital crime at at heart. Not in this case. Not in this case. What happened . Heidi and steve did have a fairly new desktop computer, and that was never seized by the police. So to this day we have no idea what that hard drive on the Home Computer wouldve shown . No. So your guy is being charged with a Contract Killing but nobody can product the contract . No. Reporter not only did investigators not have any computer records, they didnt have a record of bennets plane ticket, phone records, credit card receipts. Eyewitnesses who saw bennett and cooke together not even the murder weapon. Stephens sister, kim. All you have is a confessed murderers words. Thats all. Theres not one piece of evidence in this whole entire trial that points to stephen, other than the confessed murderer and these detectives with, oh, their belief. Reporter and when it came to motive they turned the case on its head. The defense version this isnt about stephen searching for a Contract Killer online, but rather heidi looking for love on a Dating Website and finding Alexander Bennett, who surprised her by showing up in baltimore. We thought that he met her online, came here to be with her and she rejected him and he killed her. It made sense to us. It made sense with the forensics. It made sense with the physical evidence. Reporter to back up its theory, the defense pointed to this police photo of heidis keys and bag. If, as bennett testified, hed jumped her when she walked in the door, how did her door keys and makeup bag end up tidily on the Kitchen Table in another room . So the bag on the kitchens tables not a trivial thing for you . No. I think she made it to the kitchen. I dont think he attacked her at the front door. Reporter and if prosecutors thought bennett was the foundation of their case, the defense felt it had its own star witness, Stephen Cooke. He would take the stand. The bottom line is by this time, we had come to the conclusion that its bennett versus cooke. Its who you believe. For a second i just looked at her like, What In The World is going on . Reporter stephen told of finding heidi, the love of his life slumped on their living room floor that night. And then i just held her in my arms, and was rockin her cryin, just callin her name and all. Reporter stephen testified the couple were planning on a future together. And he was surprised when others said that they were finished. Mr. Cooke, you keep saying that you and heidi were going to get married. But weve heard from other individuals that she was thinking about leaving you . Ive never heard anything like that until now. Reporter they were also planning for kids. And that was the reason he wanted a big Insurance Policy on himself. We were going to start a family, we were going to have children. And i wanted to make sure that there was enough money for heidi in case i died. Reporter he added it was heidi who wanted insurance for herself. He never pushed her to get it. Heidi then asked me if it was all right if she could get 700,000 worth of Life Insurance. And i said, fine. Reporter the defense added there was proof heidi was actively nudging along the Life Insurance policy application. Shed faxed over some final documents just days before her death. Its a fact of the case, even heidis own Brothers Harold and frank cant quite account for. Theres persuasive stories that she was gonna leave him. And yet, theres also pretty compelling evidence that she was trying to get this Insurance Policy up and running. I mean, shes active in getting thats the the insurance going. Yeah. Thats the biggest mystery to date. Thats one of the things we dont fully understand. Reporter as for the murder, Stephen Flatly denied ever meeting Alexander Bennett and said he had nothing to do with heidis death. Now steve, youve heard through testimony that you arranged for heidis murder via the internet. Did you do that . Not at all. Not at all. I didnt i didnt have anything at all to do with heidis murder. Why are you testifying . Im testifying because i want my family and friends and i want heidis family and friends to to know the truth. And for 15 years, they havent heard the truth. For 15 years, ive been blamed for something i didnt do. I didnt kill heidi. Reporter both sides rested. Which argument would the jury believe . Which man would they choose . The state and its key witness Alexander Bennett, the acknowledged murderer . Or Stephen Cooke, the man with a good job, middleclass lifestyle and father of a 7yearold son . The jury was out but Stephen Cookes sister knew the verdict she wanted to hear. Hes not guilty. Theyre theyre going to say, not guilty. Theyre going to say, not guilty. Reporter but after a day and a half of deliberations, that wasnt the jury verdict. Guilty or not guilty . We find him guilty. Reporter Stephen Cooke was found guilty of firstdegree murder, hiring a longdistance killer to murder his girlfriend. I felt like i lost my breath. I just was in shock. I just could not believe thats what theyve said. I remember screaming, oh no. Thank you lord, prayers are answered. Its relief, joy and happiness, and also sadness because we still dont have heidi. Reporter grant lewis the denver middle man has already been sentenced to lifein prison. Alexander bennett was sentenced to 30 years as part of a Plea Agreement in which he testified against lewis and Stephen Cooke who was also sentenced to Life In Prison Without Parole On September 2015. And remember the butcher Terry Gilliam . Police have totally cleared him of any involvement. And in fact offered him an apology. Its not everything, but it does, its a start, it does mean something. Reporter as for heidis family, their days are all about the kids and grandchildren. And parents who believe devoutly in a hereafter, always remember, of course, heidi. Did you talk to heidi . Oh, yes. I did. What did you tell her . I just said, sweetie, we finally got the answers weve been praying for. And justice will be served. What she saw was a nightmare. She screamed, and she yelled, and she cried. It was terrible. Did she fall down the steps . No one was thinking someone did this to her, but did someone do this to her . It just unraveled from that moment on. The fashionista with red lipstick. She meant the world to me. When she walked into a room it was like a movie star walked in