Revealed. I dont get a chance to explain it . You are not controlling this anymore. Exposing hidden bombshell evidence. Hes on the property where a woman is murdered and we dont know who he is. Everyone on social media was like, thats the guy that did it. Who was in prison, the real killer or the wrong man . We still have a murderer out there. You never know how somethings gonna go. Hello, and welcome to dateline. Michelle mockbee met the love of her life, dan mockbee, at The Warehouse where they both worked worked. They married, had two daughters and were busy Juggling Jobs and family. Then a day that began like any other suddenly turned deadly. A Security Camera quickly led police to a suspect. But just when michelles loved ones thought justice had been served, a scandal turned this story on its head. Heres Josh Mankiewicz with the early shift. They call it the early shift for a reason. It was still an hour before dawn in this small town in northern kentucky. And in a few hours, a local warehouse would become an ant hill of activity, as the first employees of the morning arrived. But who among them could predict that before the first coffee break that day one of their coworkers would be dead . I just walked in our office, and i think somebody has killed Somebody Upstairs in our office. Okay. What makes you think somebody killed somebody . Shes laying there on the ground, and theres blood all over. Impossible to believe in this tightknit workplace, where everyone knows everyone. But there was Michelle Mockbee, 42, wife and mother, face down in a pool of blood. The investigation that involved followed would peel the lid off the entire company and take a hard look at every employee who was there that morning. You know that your suspect is one of those people in the building . Thats right. Probing for clues in the victims private life. The detective asked me if there was any trouble in their marriage. Eliminating suspect after suspect, until there was one. And just when it seemed to be over, it wasnt. Did you have a sexual relationship with her . Are you denying that . I dont think it is any of your business. A scandal would scramble everything. You are not controlling this anymore. You are not the Commonwealth Attorney right here. Objection. They say the wheels of justice turn slowly. In this case, the wheels came completely off, leaving a family wondering, who would do the right thing for a kind and loving woman who went to work one morning and never came home . If you give Michelle Mockbees siblings a chance to tell you about their sister, they cant say enough good things about her. She was a good big sister. A role model. Michelle was just the most amazing sister that you could ever ask for. Very loving, caring, giving person. She would do anything for anyone. She always had a big smile. And her laughter was contagious. Michelle carried her positive spirit into the workplace. She was head of payroll at that warehouse owned by Thermo Fisher scientific, a worldwide supplier of laboratory equipment. It was also where she met her husband, dan mockbee. What was she like . What drew you to her . Michelle was funny, attractive, intelligent. There was a vibrantness to her. I mean, she was beautiful. It was at a Thermo FisherChristmas Party back in 1999 that dan first summoned the courage to share his feelings with her. Youd been thinking about michelle . Oh, absolutely. He asked michelle to stick with him that night. And she did. And then everything went sideways. And it was the worst date in the world. What went wrong . I dont know. I was totally off my game. I couldnt speak. But then i asked her out again and she said yes and well, maybe you did something right. I must have. I dont know. Or she felt sorry for me, gave me another chance. I dont know. Michelles family soon met him. Next thing you know, theyre seeing each other and getting pretty serious. After she came along . Oh, my gosh, world totally changed. I mean, sun got brighter. It was just a totally different world. Michelle and dan married in 2001 and continued to Work Together at Thermo Fisher. Not long after, came two daughters. Madeline and carly. I remember she pretty much said be nice to people. So i am going to be nice to people. Because she was nice to everybody. Yeah, she was. She would always play games with us in our backyard and take us to all of these fun places. She was just a fun person to be around. But even as busy parents, dan and michelle always planned a date night every other monday. Memorial day 2012 was no exception. How was she that night . Happy . Absolutely. Normal . Uhhuh, normal. The next morning, michelle got up to go to Thermo Fisher for the Early Morning shift. Dan had the day off and stayed home. She wakes me up, kisses me goodbye, says i love you and went to work. And that was the last you saw of her . The last i saw of her. At 5 53 a. M. A Security Camera captured michelles car as it arrived at the parking lot. She stopped by The Warehouses time clock and headed upstairs to her office. About an hour later, a supervisor named ed noticed a big stain on the upstairs hallway carpet. He started looking arounded the area with the help of coworker, the janitor, david dooley. Ed was out on the mezzanine just part of the ways, and i was holding the door. And there was just he said, theres a dead body laying there. What did it look like . I just saw from the knees down. I didnt see the whole thing. But honestly im glad i didnt look because id never been around anything like that. It was kind of frightening for me. Someone inside Thermo Fisher had killed Michelle Mockbee. But who . And just as puzzling, why . Coming up what was in that office that anybody would want . I dont know. The questions begin. Where was michelles husband dan The Morning Of the murder . I was sleeping. When what a great alibi, right . Why did you sleep on the couch and she sleep on the bed . It made us want to take a closer look at dan. When dateline continues. Rexvy. the first fdaapproved rsv vaccine. Arexvy is used to prevent lower Respiratory Disease from rsv in people 60 years and older. Rsv can severely affect the lungs and lower airways. Arexvy is proven to be over 82 effective in preventing lower Respiratory Disease from rsv and over 94 effective in those with these health conditions. arexvy does not protect everyone and is not for those with severe allergic reactions to its ingredients. Those with weakened Immune Systems may have a lower response to the vaccine. The most common side effects are injection site pain, fatigue, muscle pain, headache, and joint pain. Rsv can be serious. Talk to your doctor or pharmacist about arexvy today. Rsv . Make it arexvy. fan 1 there ya go thats what im talkin about talk to your doctor or pharmacist about arexvy today. josh allen is this your plan to watch the game today . hero fan uh, yea. I have to watch my neighbors Nfl Sunday Ticket. josh allen its not your best plan. But you know what is . Myplan from verizon. Switch now and theyll give you Nfl Sunday Ticket from youtubetv, on them. hero fan this plan is amazing josh allen another amazing plan, backing away from here very slowly. fan 1 that was josh allen. fan 2 mmhm. vo for a limited time get Nfl Sunday Ticket from youtubetv on us. A 449 value. Plus, get a free Samsung Galaxy z flip5. Only on verizon. Josh mankiewicz voiceover it was a horrible, bloody scene. It was a horrible, blood Michelle Mockbees battered body scene. Body on the floor of The Warehouse, a plastic bag over her head. Bruce mcmahon stalled with a County Sheriff Detective called to investigate. They saw the bloodstains on the hallway carpet, and concluded michel had been dragged around the corner of her office. The office itself was locked, but there was fresh prime marks on the door. It looked like an attempted breakin. What was in that office that anybody would want . Thats the mystery. While the detectives were trying to make sense of the crime scene, michels husband dan was still at home. Coworkers has started reaching out to him, but all they told him was there had been some kind of incident at The Warehouse. And thats when i started getting nervous. Dan rushed to The Warehouse. To detectives, he might have been the victims loving husband, or the perpetrator of an incredibly violent crime. Right now, they didnt know much. After he was escorted inside, dan took the initiative with detective. I looked at him and i said, excuse, me officer, my wife works. Here i really need to know that shes all right. And that is when he told me that she was deceased. His reaction was pretty excruciating to watch. I still had to press on, and i still had to move forward with my looking at him as a possible suspect. When police ask you where you were at the time your wife was killed i was doing most people are doing at 6 am, if we dont have to get up and go to work, you know . I was sleeping. Its not a very good alibi, but its only when i had. Detectives asked dan to go to the sheriffs station to take a lie detector test. You agree to take the polygraph . Yes. Thats a scary thing. Because if it goes wrong, all of a sudden, there is a case against you . Right. It was nerveracking. But dan mockbee passed the polygraph. And this time, the husband didnt do it. And with dan, cleared the detective focused on who was there that morning. 13 employers were working in the regular shipped when michelle was killed. Detectives interviewed all 13. With each person i talked to, there is no blood, there is no evidence theyve been involved in anything. If its one of these people you are interviewing, theyve disguised it well. They have. There was nothing suspicious about any of the 13 interviews. So, detectives started methodically digging through other evidence. Starting with Thermal FissuresSecurity Camera footage, and right away, they spotted something unusual that happened in The Morning Of the murder. A vehicle in the parking lot not entering but leaving, around the back of the building. Detectives matched the truck to its owner, david dooley, the janitor. And one of the workers who found michelles body. Dave dooleys truck is seen leaving the parking lot at 6 31 that morning. Right after the murder . Thats right. Thats right. The Security Tape showed dooley returning to The Warehouse around 7 00 a. M. , Detective Mcvay thought it was not that he hadnt mentioned that when i first spoke. They needed to speak with dooley again, so they went to the apartment he shared with his wife, janet and dooley wasnt surprised to see them. A kind of figured it would happen, to do a followup. Before Detective Mcvay even brought up, dooley told him hed gone home The Morning Of the murder. Mcvay recorded their conversation. I came back here, and then went back to fisher. You came back here . I can back here, yeah. I couldnt get a hold of my life, and i came home to make sure she was okay. Yesterday you didnt tell me you left. Why, you are just i didnt think about that. The detective also question davids wife janet separately, to see if she would tell the same story. This conversation would prove critical to the entire case. What she said is in dispute because a part of the recording is hard to hear. Once the first time you saw dave after he left. Was the first time i see him yesterday . Yes. When you came, after he was yes, yeah. I ask her specifically if david ever came home that morning, and she says no. Two stahl and mcvay, janet dooley had just contradicted her own husband story. So police questioned her again about that apparent discrepancy. You told the other detective that he didnt come home that day. I did . Janet seemed surprised. She told police that david did, in fact, come home and the reason she offered raised more questions for investigators. He said he ripped another pair of pants. Yet to come home and just, you know, grab a new pair of pants. Janets statements were not helping her husbands cause. David dooley never said anything about ripped pants to police. Adding to the confusion, detectives spoke with Thermo Fisher employee joe seagert, who told them he talked with dooley that morning. According joe he made it a point to come over to him and say, hey, man, i had to go home because i ripped my pants. Dooley was adamant he never said that to seagert and did not rip his pants today. But differing stories about why he came home placed the bulls eye squarely on david dooleys back. We started working on a Search Warrant for the residence and the truck. You execute those Search Warrants and you find bloody clothing. No bloody clothing. Stuff taken from the crime scene that shouldnt be at his house . No. Some kind of Murder Weapon . No. Nobody close, no weapon, but david dooley was the only employee who left The Warehouse on the morning Michelle Mockbee was killed. And they were witnesses contradicting dooley s account of why he left that morning. On september 27th, 2012, the Boone County Sheriffs Department made its move. David dooley was arrested, and charged with the murder of his coworker, Michelle Mockbee. Case closed, not by a long shot. But the david dooley would expose secrets, tarnish the reputation of law enforcement, and have michelles Family Question if justice would ever be served. Coming up david dooley was in the middle of breaking into her office when she came up the steps and surprised him. A break in . What was he after . 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[ helicopter Josh Mankiewicz voiceover Michelle Mockbees Favorite Color had always been red. Michelle mockbees favorite since her death, her family has worn red in her honor, color had always been red. Since her death, her family has worn red in her honor. And thats what they did in october, 2014, when they flowed into this kentucky courthouse for david dooleys trial. On may the 29 th of 2012, dan mockbee lost the love of his life. And two little girls lost their mom. At the hands of a man who couldnt even keep his story straight from one day to the next. Prosecutor linda tallysmith knew she didnt have a perfect case. There were no fingerprints no, dna. So she told jurors they wouldnt hear about any smoking gun. But they would hear david dooleys own words, which had made him The Last Man Standing in the detectives Process Of Elimination. It was through this process that the path kept turning back to one person, the defendant, david dooley. Jurors heard that almost all the employees working on The Morning Of the murder wer