A police officer from Broomfield was dispatched to check on a welfare concern, he climbed onto the hood of the patrol car. Peering through the garage window to observe inside. And at that very moment, he discovered a horrifying scene. 151 here. Send the medical team and unit 1110 to the scene. I need to break the door. There's an unconscious woman in the garage. Broomfield police. Broomfield police. Oh, damn. A few hours before the police department's check, Broomfield received a call from a man named Daniel Kug regarding his family being threatened by his wife's ex-boyfriend. My name is Daniel Krug. We have been threatened today. She has an appointment with Detective Martinez, but I can't reach him. Can you have someone contact Martinez or send someone to check on the welfare at my home? The victim is Crystal Krug, age 43, Daniel's wife. To check on the welfare at my home, the victim is Crystal Krug, age 43. Daniel's wife lying unconscious on the floor. The first suspect that the police thought of is Crystal's ex-boyfriend. However, the details that followed changed everything. A piece of tape was stuck over the doorbell camera. It seems someone had come from the side and taped it over. The camera on the doorbell being taped over indicated this was a calculated action and meticulously planned with one crucial detail that the security system of the house had been disabled. Right at the time the crime occurred and only two people had the authority to disable it. that was Crystal or her husband, Daniel? Mysterious clues began to surface. Was the true perpetrator of this murder the ex-boyfriend who had haunted for years? Or was it the husband with some dark secret? Or was there another mysterious figure trying to stage events to frame both? On December 14th, 2023, the Broomfield police received a welfare check call at the Kug residence. Initially thought to be just a routine matter, the welfare dispatch requested to speak. Hello, my name is Daniel Kug. I don't think this is an emergency, but I have a very strange feeling. My wife hasn't responded to any texts or calls, but I can't reach him. Can you have someone contact Martinez or could you send someone to conduct a welfare check at my house? Right after receiving the request at 12:28 in the afternoon, an officer arrived at the Krug residence to check on welfare, but he had no idea that behind the door was a horrifying scene capable of haunting all those involved. Oh, damn. Oh my god. What the hell? Holy [ __ ] The police discovered Crystal Kug, 43 years old, lying unconscious. There was a head injury and signs of stabbing. He immediately rushed in to try to save the victim. In desperation, trying to struggled to save the victim's life. The 151. >> Female victim had a head injury. Her body was still warm. I am performing CPR. >> CPR. >> Hello, ma'am. Need you to stay out, please. >> She has an injury to the head. I'm not sure of the cause. It could be from a fall, but I'm not certain. The injury is very severe. Her husband had mentioned that someone was lurking, threatening to kidnap her. Is she still conscious? No. Despite the officer's best efforts, however, Crystal Krug did not survive and was pronounced dead at the scene. Due to the ambiguous nature of the death, the police immediately expanded the investigation. But little did they know that a dark, unpredictable secret lurked behind it all. From the initial call from Crystal's husband, they learned she had been followed, and they suspected that the mysterious man could be the attacker. The crime scene was reinforcing that terrifying possibility. One officer recounted that he walked around the garage to gather information. Then he saw Crystal lying at the bottom of the stairs. Blood splattered on the wall. The front door was unlocked, but the doorbell camera had been taped over. Perhaps someone had secretly taped it from the side. Crystal might have opened the door for him. Then she was attacked with a clear head injury while the specific suspect had yet to be identified. The police were forced to search the entire house, hoping to find some clue. They still did not know who the intruder was and why he committed the crime. This is Broomfield police. Is anyone home? Speak up. A person is entering through the front door. This is Broomfield Police. Is anyone home? This is Broomfield Police. 3501. Is anyone home? I have a few rooms on the left here. Let me know when you go around. Okay. RFP mentioned there was someone lurking who threatened to kidnap. So, please be alert. You watch my left side. This is Broomfield Police. This area is secure. I'm heading up here. I don't know what that door is. You go one way, I'll go another. You go that way. Through the open door. Checking all around. I'll go straight. There's another door on the left. While the police are securing the house, Crystal's family received the bad news when Daniel, the victim's husband, arrived at the scene. He collapsed in pain and the whole family broke down in tears. Just a few hours earlier, he had called the police for a welfare check, hoping his wife would be safe. Now, this man faced a harsh reality. Tragically, the woman he cherished, held daily close, had passed away, and he couldn't stop blaming himself for not being able to protect his wife. I am a foolish husband. Oh my god, I couldn't protect her. I should have done that right now. The police found no one else in the house, proving that the attacker had escaped. The only clue they have right now is someone who had been stalking Crystal. They must quickly identify and track this person down. But things were not that simple. The investigator discovered DNA traces on the victim's neck, and after examination, this trace belonged to a stranger. This only reinforced the suspicion that the victim had been stalked and murdered. They also found a camera system around the house. The attacker might have been recorded. The data was immediately sent for forensic analysis while waiting for the results. The police focused on reviewing all evidence and reports that Crystal had submitted about the person stalking her. Soon after, a potential suspect's name emerged. November 7th, 2023, just 3 weeks before the murder. Crystal had gone to the police station to report that her ex-boyfriend, Jack Anthony Holland, was constantly stalking and threatening her in fear. She recounted how he actively found her contact information. Even though she never provided any information, the situation became increasingly complex. Crystal told the police that after years of being harassed by her ex-boyfriend, Jack Anthony Holland, he escalated to serious stalking and threats. Jack Anthony Holland harassed her and escalated to serious stalking and threats. Even though she deleted her Facebook account and changed her contact methods, he still found her and messaged her with vulgar content. He even knew personal information like her expired parking permit. Crystal received strange messages from a classified page she had never known. This further complicated and endangered the situation after this interrogation. The police closely monitored the situation. They even disguised themselves to follow. Daniel and Crystal hoped to identify the source of the harassment, but they found no clues when they reviewed all the evidence related to the stalking of the officers. They discovered the most crucial incriminating detail. They found a record of a previous visit to the house. When Crystal's husband had seen the stalker lurking around around their house, I left home at about 4:15 or 4:20. I went out and saw the garage door closing, but it wasn't completely shut. My wife kept bringing up that detail. I ran to the store and returned at around 4:50 or 4:55. When I drove down, the door was open, the front door or the double door. When I parked, I saw someone. I thought it was a man, but everything happened so fast, you know. He wore blue jeans, a gray t-shirt, ran outside, jumped over the fence, and disappeared in that direction. I wasn't too concerned about the chase. I just wanted to check if the kids were okay. He seemed to have jumped over this area and ran toward the other side. Although they couldn't catch the attacker. Daniel noticed a shocking detail. Anthony had stolen a personal item, something that directly linked him to the crime scene. I hadn't thought about calling you until my wife came home recently, and we realized that the spare key we kept in the garage was missing. It usually sits in the toolbox, but it has vanished. Did you notice anything else missing? Tools are easy to steal. The tools there are all basic. Nothing expensive at all. No tools were missing. The bike is still on the wall. None of them are gone. The snowboards are intact. Golf clubs, too. Everything remains except the spare key. That's the house key, right? And this is the turning point of the case. The body of the victim, Crystal, was found right in the garage, exactly where the spare key was stolen. This is a detail that cannot be overlooked. Digging deeper, the line between guilt and suspicion blurred, leaving a troubling question. Is the truth as they see it, or is there a darker secret? Reviewing the old evidence made Anthony the prime suspect, and he was believed to have sneaked into Crystal's house to steal the spare key. Now, all suspicion was focused on the name Anthony. The quickest lead was his workplace in Utah. But before proceeding with the arrest, they sought out a colleague of Anthony to gain a clearer understanding of who he was. What is Anthony like normally? He is a good person, just a bit different, a little slow, not too outgoing, a bit creepy, but overall seems friendly. Has he ever made anyone uncomfortable with his words or other behavior? No, not that I know of. I haven't heard anything with colleagues and clients. One co-orker remarked that Anthony had a pretty good reputation. However, when the police asked about his alibi when Crystal was murdered, she revealed a detail that raised further suspicions. I noted this down. This page is the meeting schedule because he had a meeting scheduled at 9:30 and that was the meeting he missed. The time he was absent from the meeting was enough for Anthony to commit the crime. Knowing this detail, the police immediately proceeded to interrogate him. Let's see. I'll read off some names. See if you recognize anyone. Have you ever heard the name Crystal Krug? She might be using a different last name. Grimshaw when you got to know her. What about Daniel Krug? No. No. So, how did you know Crystal? She was my ex-girlfriend. How long ago was that? Since 199. So, that was a very, very long time ago, right? She was my first love. When was the last time you spoke to Crystal? Was it recent? A long time ago. A really long time since you moved away. So, that would be around 2014. Ah, yes. Anthony denied ever contacting Crystal again. Then the police shifted to directly asking about her death to observe his reaction. What do you think about that? Unbelievable. She was my first love and I just can't believe it. I know it's been a long time since we met, but still I'm still in shock. Anthony appeared to be oblivious, but he was still considered a suspect. However, later colleagues confirmed that she had dot dot dot wrong. Anthony actually attended the meeting that morning and he never left Ultra, so the suspicion against Anthony was cleared. If it wasn't Anthony, then who was the one that acted while the police were nearly at a dead end. Reports from the camera system changed everything? All the cameras went down just as the murder occurred. This is truly shocking because only two people had access to the camera system and Crystal would never be foolish enough to turn off the security equipment knowing they were being threatened. The only chilling possibility revealed that the perpetrator of the case could be Daniel. Looking at the victim, he had full access to the camera system. Family security, but a painful attitude. Daniel's extreme reaction at the scene made the police hesitate to learn more. They went to Crystal's family and the victim's father was about to speak, shocking everyone. >> She goes, "Uh, and I think I pretty much decided uh I am going to proceed with a divorce from Dan." I go, "Oh, okay." She goes, "Uh, so one of the things that really bothers me is uh he uh he just doesn't take this stocking thing seriously. It doesn't seem to bother him at all. I I'm telling him that I'm afraid and and it he he's just blowing it off and he uh it's not bothering him even though it appears that he's been threatened by this stalker too. It doesn't even phase him and it uh it doesn't bother him that I'm upset about it. Uh that at this point uh I don't rule out that it's Dan. I'm afraid that Dan could have something to do with it. And I think uh I think Anthony could be Dan. So she had the inclination that Dan was in fact the stalker and that there was no Anthony. And that was 2 days before her death. >> The testimony from the victim's father made the victim's husband. Daniel become the focal point of the investigation when the police went to the office to verify. They discovered he was missing at the time Crystal was murdered and he was late. This detail immediately pushed Daniel to the position of prime suspect. Just then, a friend of Daniels suddenly reached out, providing a lead related to the murder weapon. The suspect in your murder case previously worked at the Colorado Department of Health and Environment. The person directly supervising him was someone named Eric Shaminsky. >> The the defendant in your uh murder case used to work at Colorado Department of Health and Public Environment. >> Yes. >> His immediate supervisor was named a fellow named Eric Sherman. Uh and I can get you Eric's contact information. Eric told me uh last week, last on the 25th when we were at a retirement event for an employee that um your defendant showed him, he showed him uh what could have been something like the murder weapon. >> This new lead helped investigators solidify their suspicions about Daniel. And then the worry immediately turned into reality. Data from Crystal's personal phone revealed a shocking twist. It was Daniel who had been stalking her all along. Tracing the messages, police discovered. All were sent from Daniel's office. Clearly, Daniel had been planning to murder his wife for a long time. With irrefutable evidence, police immediately prepared a plan to arrest him before everything was exposed. Go, go, go. Hands on your face. Hands on your face. Don't move. Hands on your face. Check the vehicle. Make sure everything is safe. Are you back yet? After being arrested, Daniel was taken to the police station for questioning, uncovering secrets far darker than his outward appearance. From the very beginning, Daniel tried to control the situation and crafted a facade that benefited him. I felt hurt that she didn't tell me about the stalker from the start, but she told me right away. I knew about the stalker from the beginning, but she told me right away. After he sent her a picture of me, I was really sad and angry that she had kept that from me. Once he sent her a picture of me, and I was definitely hurt and angry that she was keeping that as a secret. Can I ask you what do you think happened today with Crystal? I don't know, but you must have thought of something. I'm sure your head is thinking of millions of different possibilities. What do you think happened in my mind? The story is someone came knocking at the door. She might have gone out to get a package. Then that person immediately sneaked in. She is a strong person. She would resist. Daniel believed the inspectors would buy his fabricated story, but he didn't know that. They would buy his fabricated story, but he didn't know that they had enough evidence to convict him. Let's see. How do you plan to explain why all the security cameras in the house were off? If it was some stranger committing the crime, you say my home cameras were off. That's impossible. The camera can only be turned off through the app. It has to be one of us pressing the button to turn it off. Daniel accidentally admitted that it could only be him or Crystal. Only they could turn off the security camera. But upon realizing this, it could be used as evidence against himself. He immediately changed his tone. It can't be me. I didn't turn them off. I have no story to tell you. I wish I did. Although Daniel denied the charges, the investigators quickly turned the tables and revealed the Trump card, the Gmail account, the Kickman account you received, the one that had his photo and phone number. It all originated from the IP address at his workplace. It couldn't be unreasonable at all. He might have taken that photo in my office. And moreover, according to what we know so far, there's no possibility that Kickman could be linked to the case. Considering where he currently is, there's still a mystery. There must be a satisfactory answer, but everything is pointing in one direction now. Daniel completely collapsed, but the investigators kept pressing him with their final questions. So, give us another explanation. We know it's not Kickman. There must be an AI involved, right? He turned off the camera system, accessed the password protected system to disable the cameras, using the IP address from his own office to create the accounts, sending messages and images to impersonate a stalker. So, go ahead and tell us. Help us explain this confusing story. No, no, I didn't do that. Daniel still did not confess to his crime. Instead, he shamelessly claimed that someone else was behind it. I want you to find out who did this because I know it's AI. Don't you believe me? Fine, just don't stop investigating other leads. Okay, find out. Track down that bastard. I don't need you to catch him. I just want that bastard dead today. He took my children's mother before Christmas. Find him. I don't care how you catch him. I don't care how you kill him. Just find him. I don't believe in karma. I don't know what else I need to prove. When you convict him, I don't know anymore. Just find him. Before the murder occurred, the police found that on Daniel's device. There were chilling search terms like when is head trauma concerning, "How hard do you have to hit to knock someone unconscious?" or "How long can someone be unconscious?" without causing brain damage, even while continuously denying guilt. Evidence showed Daniel had been stalking Crystal for months, and that obsession led to tragedy. He had harbored intentions to kill his wife for years, but it only took the police a few days to unravel the plot. In the end, Daniel had to pay for his crimes. In April 2025, Daniel Krug went to trial and was convicted of multiple charges: first-degree murder, stalking, and identity fraud. His sentence was life in prison without parole, plus an additional 9 and 1/2 years. However, the DNA found on Crystal's neck remains a mystery to this day, as it does not match any AI related to this case. The truth has finally been revealed. Daniel Kug was the one who murdered his wife despite trying to create a strong alibi. But in the end, he could not escape the grasp of justice. However, there is one detail that remains puzzling. That is the DNA found on the victim's neck, which still remains a mystery. It is neither Daniels nor Anony's or anyone else in the case files. So, dot dot. Is there another person who appeared at the scene? And are they connected to this case? Please leave your thoughts in the comments section of this video. Thank you for watching today's video. If you enjoyed it, don't forget to like, share, and subscribe to Cops Camera US for more true crime cases in the future. For now, goodbye and see you next