Imagine a mother, Kristil Krug, living in fear, stalked relentlessly, only to be found murdered in her own garage. How could this happen? And could it have been prevented? This isn't just a true crime story; it's a chilling look at how stalking can escalate to deadly violence.
Victim advocate Heather Aites knows the devastating impact firsthand. She's trained to support people in their darkest hours. On December 14, 2023, she was tasked with comforting Dan Krug, a husband who arrived home from work to the horrifying discovery that his wife, Kristil, was dead, murdered in their Broomfield, Colorado, garage. Imagine the sheer shock and grief.
"It's a weird feeling standing there when somebody is being told, 'I'm sorry, but your loved one has died,'" Aites explained.
Even more disturbing, Aites revealed that Dan had been dealing with a stalking case alongside his wife. "This man has been going through a stalking case with his wife… he is being stalked as well. And now she is gone." This detail immediately throws a wrench into the narrative. Was Dan also a target? Or was this a carefully constructed smokescreen?
As investigators began meticulously searching the crime scene for any shred of evidence, Aites drove a distraught Dan to the police station. An officer’s body camera captured the raw emotion of that ride.
Aites recounted, "He was crouched over to the side of the passenger door… And I'm comforting Dan by rubbing his back."
Dan and Kristil Krug, both 43, had been married for 16 years and shared three young children. Their life, seemingly normal on the surface, was about to be shattered.
Peter Van Sant of CBS News' "48 Hours" asked, "What did he say in the car?"
Aites responded, "In the car… he was pretty focused on the kids… he was very adamant about wanting to be the one to tell his children." This speaks volumes about his initial concern and priorities in the immediate aftermath.
Under the leadership of Broomfield Police Chief Enea Hempelmann, investigators launched a full-scale investigation, leaving no stone unturned.
Chief Hempelmann stated, "We… immediately, uh, started doing interviews… talking to neighbors, canvassing."
After several hours, Dan, having composed himself somewhat, spoke with detectives. He claimed that the morning had been completely routine.
Dan Krug told detectives, "Mornings are very routine in the house."
He explained that they got the kids to school, and Kristil seemed perfectly fine when he left for his job at the Colorado Department of Public Health and Environment.
Dan recalled, "While I was driving, uh, my -- my phone dinged."
According to Dan, Kristil texted him, asking if he could pick up one of the children after school. But when he replied, inquiring about the time, she never responded.
"And that -- that was weird," Dan told detectives.
This lack of response was so unlike Kristil that Dan immediately contacted the police, requesting a welfare check.
Officer John O'Hayre's bodycam captured the grim discovery: "I got a female down in the garage."
Kristil's parents, Lars and Linda Grimsrud, were devastated.
Lars Grimsrud struggled to find the words: "There are not words that can describe, what you feel as a parent at that point."
Linda Grimsrud added, "It's probably a parents' worst nightmare."
Lars described Kristil as a multifaceted individual: "She was an engineer… She had… incredible skills in, uh, math, sciences, chemistry, physics… she also had the -- the talents in the… arts."
Linda remembered her daughter's zest for life: "She loved to just get out and live life."
Kristil cherished working alongside her father on classic muscle cars in his garage.
Lars reflected, "We'd work on the cars… We'd race the cars… Kristil always felt very comfortable coming over here… If we needed to talk or whatever, this is where we would sit and just… enjoy each other's company."
But these cherished moments took a dark turn in the fall of 2023. Kristil confided in her father that she was living in fear, targeted by a stalker.
Lars recounted, "She sat here and told me that she was being stalked and that just shocked me… and I asked her, well, have you talked to the police?"
Kristil had indeed contacted the police and met with Broomfield Detective Andrew Martinez.
Det. Martinez recalled, "She came into the interview room and just kind of took over and just told me everything… without hesitation."
Their conversation was recorded, revealing Kristil's growing anxiety.
Kristil told Det. Martinez, "I keep trying to remind myself, this is intending to be terrorizing. This is intending to scare me."
She explained that on October 2, 2023, she received an unsettling text from someone named Anthony, asking to "hook up" and stating he would be in the area.
Van Sant asked, "And how does she respond to that?"
Det. Martinez replied, "She did not respond."
The following day, the texts became increasingly disturbing, including obscenities and the chilling message, "you should kill urself. Dont waste my time."
Van Sant questioned, "Somebody that wants to hook up, now is saying, go kill yourself. How do you interpret that -- that second text?"
Det. Martinez stated, "It's a pretty extreme reaction to not getting a response."
Kristil identified the sender as Anthony Holland, an ex-boyfriend from her past. They had dated for about a year after high school but broke up in 2000. Her parents remembered Holland making a positive impression at the time.
Linda Grimsrud described him as, "Very friendly very courteous. He always had good manners."
However, Holland resurfaced unexpectedly in 2002, contacting Kristil repeatedly in 2005, 2010, and 2016 via Facebook, despite her clear rejection.
Kristil told Det. Martinez, "He's like we're meant to be together… I said, 'this is really creepy for me. You need to stop.'"
After deleting her Facebook account, Kristil believed she had finally escaped Holland's unwanted attention. But then came the texts in 2023.
Kristil told Det. Martinez, "This was alarming. He's never said this kind of stuff to me before, so --"
Over the next two months, Kristil received a barrage of threatening messages through text and email, including threats against her and Dan. A particularly disturbing element was a photo of Dan getting out of his car at work, prompting Kristil to contact police. A few days later, she received the text: "Saw u at dentist… see you soon."
Van Sant pointed out, "That suggests he might be surveilling them both, right?"
Det. Martinez confirmed, "Correct."
Kristil told Det. Martinez, "This now is escalating."
Det. Martinez explained, "The harassment, uh, is just constant… And she's just believing that every corner presents some sort of danger for her."
To gather evidence and locate Anthony Holland, Martinez had to obtain search warrants, a process that can be agonizingly slow.
Van Sant noted, "Getting that information takes time… Sometimes those companies are reluctant, or they slow walk getting that information to you, correct?"
Det. Martinez acknowledged, "Yes."
Kristil, growing increasingly desperate, took matters into her own hands. She hired a private investigator and located Holland in Utah, approximately 500 miles away. She shared this crucial information with Martinez, who, controversially, chose not to contact Holland at that time.
Det. Martinez explained, "I explained to Kristil… that we wanted to gather as much evidence as possible and ideally obtain an arrest warrant so when law enforcement does go to, uh, Anthony's door, we can take him into custody and not have to walk away."
But here's where it gets controversial... Was this the right call? Could an earlier intervention have changed the course of events?
Lars Grimsrud felt the investigation wasn't moving quickly enough, saying, "She made the comment that she felt… they had abandoned her that -- that they weren't doing things aggressively enough."
Kristil took steps to protect herself and her family, including installing security cameras and even carrying a gun.
Lars revealed, "She was scared… I said…well this sounds serious enough you need to start carrying… you'll use one of my guns for -- for right now."
Van Sant asked, "Is this the very gun that she took with her?"
Lars confirmed, "That is the actual gun that she initially then carried."
Dan Krug was also feeling the pressure.
Dan told detectives, "I went to the grocery store briefly on Tuesday and someone behind me dropped a can and I f****** panicked… So, what am I doing? I'm panicking. And I'm doing a s*** job of protecting my wife… So, I'm not -- I'm not doing good."
Dan also revealed that they had given the stalker a nickname: "We call him Kickman."
Van Sant asked, "Where'd that name come from?"
Det. Martinez explained, "Kickman… Dan had told me was because the suspect email that was initially contacting Kristil was… ahollandkicks at gmail.com."
As the weeks dragged on, the constant threats took a heavy toll on Kristil.
Linda Grimsrud shared, "It was just heartbreaking. She was just in tears… She was just like, what am I gonna do? How am I gonna live?"
Van Sant asked, "Did she feel she was being hunted down by Anthony?"
Linda Grimsrud affirmed, "Yes."
Kristil also confided in her siblings, Jenna Ericson and Josh Adamson, about her fears.
Jenna Ericson stated, "She was terrified."
Van Sant asked, "Did she ever express to either of you the fear that this man I think is going to kill me?"
Both Jenna Ericson and Josh Adamson confirmed that she had, with Jenna adding, "She said, it's either going to be me or him that's dead. And I'm going to do everything in my power to make sure it's not me."
When Kristil Krug was found dead, Detective Martinez immediately suspected Anthony Holland.
Det. Martinez stated, "My initial assumption was that… Anthony Holland had, uh, gone to her home and murdered her."
Within hours, police descended on Holland's home in Eagle Mountain, Utah.
Holland described the scene: "Pounding at the door."
Van Sant emphasized, "Like bang, bang, bang, bang, bang."
Holland continued, "So I go to the door… I see like eight cops… I had no idea what was going on."
An officer asked, "Where's your ID at?"
Holland replied, "It's in my room."
The officer then asked, "Have you ever heard of the name Kristil Krug?"
Holland admitted, "They asked me if I knew Kristil Krug and I told them I did know her." He added, "She was my very first girlfriend ever."
When asked when he last spoke to Kristil, Holland said it had been "around 2014, 2016" via Facebook.
Holland recounted his thoughts at the time: "Why would they come all -- all the way here to ask me about Kristil?" He assumed it was about the Facebook message where he said he missed her.
And this is the part most people miss... The police didn't tell Holland that Kristil had been murdered. They were there to gather information, not provide it.
Holland was asked about his whereabouts that day. Fortunately, he had an alibi. He had purchased a sweatshirt at a Kohl's store near his home just hours earlier.
"It turns out that was one of the most important purchases you have ever made," Van Sant remarked.
Holland agreed, "Because it was my alibi, because there is no way I could have made it from Colorado back to Utah to buy the sweatshirt… It was an eight-hour drive."
He also provided employment records that confirmed he had been in Utah all along.
After verifying his alibi, officers released Holland.
Back in Colorado, Dan Krug was still being questioned. He offered his own theory about the crime: "So in my brain, the story that I have is someone came to the door, maybe she went outside to get a package and they must have come in. And she's -- she's a fighter. She's -- she is strong. She would've fought."
Earlier in the interview, Dan had requested to be the one to tell his children about their mother's death.
Despite Dan's initial shock and grief, investigators found something amiss. The security cameras Kristil had installed were all manually turned off, except for one Nest camera near the garage.
Digital forensic examiner Randy Pihlak discovered that the threatening messages to Kristil had been sent from the same IP address: the Colorado Department of Public Health and Environment, where Dan worked.
The messages threatening Kristil and her husband had been sent using the Wi-Fi at Dan's office. Suddenly, the focus shifted dramatically. Could Kristil's stalker, and possibly her killer, be someone much closer to home?
Det. Martinez described the atmosphere in the investigation room: "The entire air was just kind of evacuated out of our investigations room and we realized… we need to focus on Dan and where he's been and what he's been doing."
Detectives confronted Dan with their suspicions.
Det. King Sullivan asked, "Who do you think killed her?"
Dan insisted, "I think it's Kickman. I think it's Anthony."
Det. Martinez countered, "What if I told you that we had already spoken with Anthony and there's no way that he was in town today?"
Dan's response was telling: "Then I have nothing. And, then I'm f****** terrified to bring my children home."
Det. King Sullivan pressed, "What are you terrified of?"
Dan replied, "If it wasn't him, who was it?"
But even as Dan professed ignorance, his body language betrayed him.
Det. Martinez observed, "He took a defensive posture. He sat back in the couch a little bit. He crossed his arms… Kinda like I have nothing to explain."
Det. King Sullivan added, "I think his head is spinning, thinking about what else are they gonna find?"
Dan Krug went from grieving husband to murder suspect in a heartbeat.
Despite the mounting evidence, Dan maintained his innocence.
Dan insisted, "I loved her… there has to be someone else. But I don't know who that is."
But the detectives didn't buy it.
Det. King Sullivan noted, "He had no reaction, um, and really no explanation."
Within minutes, Dan Krug transformed from sympathetic victim to the prime suspect.
Dan pleaded, "I get the narrative you're putting together, but it alleges that I would do this to my children… I love and adore my children."
Det. Martinez summarized the chilling possibility: "It's a pretty frightening idea that… the biggest threat that to you and your safety is actually living in the same house as you."
As detectives processed Dan for physical evidence, he continued to insist that the real killer was still at large.
Dan pleaded, "I just want the f***** to pay… He took my children's mother before Christmas. They're never gonna get over that… I don't care if you capture him. I don't care if you kill him… Find him… Don't just as assume it's me. Keep looking."
Linda Grimsrud recalled the moment she realized Dan was a suspect: "I think at his interview. So that same day when they held him and they held him pretty late."
An autopsy revealed Kristil had been bludgeoned to death and then stabbed in the heart.
With Dan as the prime suspect, detectives delved deeper into his relationship with Kristil. According to Kristil's parents, the marriage was in trouble.
Linda Grimsrud revealed, "She said, well, I'm sleeping on the couch mom."
The troubles, they said, stemmed from Dan's temper.
Lars Grimsrud explained, "It -- it could be anything, but it was usually if he was losing control…"
Kristil's sister, Jenna Ericson, recalled Dan's face turning red when he was angry.
Linda Grimsrud said they had a system to manage his anger: "They had a thing where… they'd go, OK, walk away… You need to walk away. And so, you know, they were trying to manage it."
But in the weeks before her death, Kristil had decided to leave Dan.
Linda Grimsrud revealed, "She didn't wanna have this marriage anymore."
Lars Grimsrud confirmed, "She had decided that she needed to get a divorce."
As detectives pieced together their case, digital forensic expert Randy Pihlak uncovered crucial evidence on Dan and Kristil's cell phones, including those seemingly innocuous texts from the morning of the murder.
Pihlak discovered that the text Dan claimed to have received from Kristil about picking up the kids had been pre-programmed using a new feature on her phone.
Pihlak believes that Dan Krug preprogrammed those messages before leaving the house, while Kristil was already dead, to establish an alibi.
Pihlak also found damning internet searches on Dan's phone: "What happens when you're knocked unconscious?" "Do people really go unconscious when hit in the head?" and "How hard for head trauma to go unconscious?" These searches were all conducted the day before the murder.
Just two days after Kristil's murder, detectives felt they had enough evidence to arrest Dan Krug for stalking and murdering his wife.
Detectives followed him to a grocery store and arrested him in the parking lot.
Det. Martinez confronted him with a powerful question: "Do you want to tell your kids that you killed their mother, or do you want somebody else to?"
After that question, Dan asked to speak with his attorney.
Lars Grimsrud felt a huge sense of relief at the arrest.
Soon, Kristil's family would face Dan in court.
When Deputy District Attorneys Kate Armstrong and Stephanie Fritz were assigned to prosecute Daniel Krug, they were struck by his audacity in thinking he could get away with the murder.
The trial began in April 2025.
The prosecution presented Kristil's final hours to the jury.
Armstrong stated, "On December 14th of 2023, Kristil Krug started her day like any other day… She took her younger two children to school."
Upon returning home, she was ambushed in her garage.
Armstrong explained, "Kristil… pulled back into her garage. She gets out of the car… when she is attacked from behind." She suffered skull fractures and was stabbed in the heart.
Armstrong theorized that the final stab was an act of rage and control.
The prosecution argued that Dan had sent the threatening messages to Kristil in an attempt to manipulate her into staying with him.
Armstrong stated, "It was not working… the stalking was not leading her back to him… I think it then turned to, 'I'm still losing her' kind of, uh, 'if I can't have you, nobody can.'"
They argued that Kristil had begun to suspect Dan was her stalker.
Prosecutors said Dan Krug tried to outsmart investigators by pre-programming the text messages on Kristil's phone.
At trial, the digital evidence against Dan was overwhelming, including the photograph he took of himself at work and sent to Kristil.
The defense argued the investigation was flawed, pointing out that the murder weapons were never found and Kristil's phone wasn't tested for fingerprints or DNA.
After a day and a half of deliberations, the jury found Krug guilty of first-degree murder, stalking, and criminal impersonation. He was sentenced to life in prison without parole.
But even after his conviction, Dan Krug maintained his innocence, claiming the real killer was still at large and his children were in danger.
Could Kristil Krug's murder have been prevented?
Anthony Holland believes police should have contacted him sooner.
Det. Martinez says the case has haunted him, and if he could go back, he would make that call.
Kristil's parents believe that Dan was determined to kill her, regardless of the investigation.
Kristil's death has left a void in the lives of those who loved her.
Her sister hopes Kristil's story will serve as a warning to others in dangerous situations.
The family has started an online fundraising campaign to help Kristil's three children.
This case raises several critical questions: Did the police act quickly enough? Could Kristil's murder have been prevented? And what responsibility do we, as a society, have to protect victims of stalking? Share your thoughts and opinions in the comments below. Do you believe the detective made the right call in not contacting Anthony Holland sooner? Or should he have acted more aggressively based on the information Kristil provided? Let's discuss.
