Transcript

The Sneak Attack on Katlyn Lyon | Full Episode

From 48 Hours · Episode page · Watch on YouTube

· 42 min · 5,069 words · 55 timestamped sections

This is the full, timestamped transcript of "The Sneak Attack on Katlyn Lyon | Full Episode", an episode of 48 Hours published February 6, 2026 (42 min, about 5,069 words). It mentions 12 people, works and ideas, including Trenton Fry, Katlyn Lyon Montgomery, Crystal Sale, Jacob Piery, Sherry Cox.

What this episode is about

The content recounts the tragic story of Katlyn Lyon, a vibrant woman who was loved by many and known for her individuality and zest for life. Following her unexpected and tragic passing, her family and friends seek to share her story, confronting the challenges of grief and the police's assumption of a drug overdose, despite their disbelief in that narrative.

Key takeaways

  • Beauty can conceal danger; Katlyn's vibrant life ended in a shocking twist, challenging our assumptions about safety.
  • Life's unpredictability: a morning phone call turned into a family's nightmare, revealing how quickly joy can vanish.
  • Accountability matters: Katlyn's story highlights the urgent need for justice, reminding us that every victim deserves a voice.
  • The dark side of friendship: even among loved ones, hidden threats can exist, forcing us to question who we trust.
  • Sometimes, the crime scene is our own perception; Katlyn’s case shows just how easily evidence can be overlooked.

Who speaks in this episode?

What is discussed, and when

  1. – 5:00: Katlyn Lyon Montgomery, Crystal Sale, Sherry Cox
  2. – 10:00: Robbie Burnette, Sherry Cox, TikTok, Tina Hopkins
  3. – 15:00: Trenton Fry, Jacob Piery, Katlyn Lyon Montgomery, TikTok
  4. – 20:00: Trenton Fry
  5. – 25:00: Sherry Cox, TikTok, Wes Nance
  6. – 30:00: Wes Nance, TikTok, Leila Mitchell
  7. – 35:00: Trenton Fry, Katlyn's iPad, Wes Nance
  8. – 40:00: Trenton Fry, Crystal Sale, Jacob Piery, TikTok

Notable quotes from "The Sneak Attack on Katlyn Lyon | Full Episode"

  • The oldest of the sisters, Sherry Cox, was taking care of Katlyn's then four-year-old daughter, Milani, while periodically checking in on Katlyn in the hospital.
    about Sherry Cox · at
  • ♪♪ I can say that there are no words that have been invented to describe how this feels.
    about Crystal Sale · at
  • I thought I had done enough, but I think that's what tears me up the most is just...
    about Jacob Piery · at
  • ♪♪ -Investigator Burnette was convinced that Trenton Frye had somehow gotten into Katlyn's apartment and strangled her.
    about Robbie Burnette · at
  • Trenton Frye was charged with first degree murder and pleaded not guilty.
    about Trenton Fry · at
  • Katlyn's family updated their growing community of supporters on TikTok, while prosecutor Wes Nance made his case to the most important audience - the jury.
    about TikTok · at
  • Frye's phone had automatically connected to Katlyn's iPad via Bluetooth, providing the only evidence, says Nance, that placed Frye inside Katlyn's apartment.
    about Katlyn's iPad · at
  • Trenton Frye was found guilty of first degree murder in Katlyn's death.
    about Katlyn Lyon Montgomery · at

Who and what is mentioned in this episode?

People

  • Trenton Fry — Person · Accused/convicted perpetrator (ex-boyfriend) · 7 mentions · first at
    Katlyn’s ex-boyfriend; investigated, charged, tried, and convicted of first-degree murder; motive and digital evidence are discussed extensively.
  • Katlyn Lyon Montgomery — Person · Victim / central subject · 4 mentions · first at
    Her life, assault, death, and the family’s pursuit of justice form the core narrative of the episode.
  • Crystal Sale — Person · Primary family spokesperson (mother of victim) · 3 mentions · first at
    Katlyn’s mother; describes Katlyn’s life, the hospital events, grief, and advocacy; appears as a main interview voice.
  • Jacob Piery — Person · Roommate / key witness (initial suspect later supported by family) · 3 mentions · first at
    Katlyn’s roommate who called 911 and performed CPR; initially investigated heavily; later testified at trial and was embraced by the family.
  • Sherry Cox — Person · Family caregiver / guardian figure (older sister of Crystal; aunt/guardian) · 3 mentions · first at
    Key family member who cared for Milani during the crisis and later became her guardian; also received texts from Trenton and interacted with investigators.
  • Wes Nance — Person · Prosecutor (Commonwealth’s Attorney) · 4 mentions · first at
    Presented the prosecution’s theory and digital evidence (cell pings, Bluetooth connection) to the jury; key legal voice in trial narrative.
    Frye's phone had automatically connected to Katlyn's iPad via Bluetooth, providing the only evidence, says Nance, that placed Frye inside Katlyn's apartment.
  • Tina Hopkins — Person · Family spokesperson / social media communicator (youngest sister) · 2 mentions · first at
    Helped communicate updates publicly (TikTok), traveled from Hawaii, documented organ donation moment, and supported Crystal and Sherry.
    Sherry told their youngest sister, Tina Hopkins, nearly 5,000 miles away in Hawaii, that 28-year-old Katlyn was unconscious and in grave condition.
  • Robbie Burnette — Person · Lead investigator (law enforcement) · 2 mentions · first at
    Investigative lead who documented injuries, assessed timing, evaluated Milani’s statement, and focused suspicion toward Trenton based on evidence.
  • Leila Mitchell — Person · Journalist covering the trial · 1 mention · first at
    Local TV reporter who covered the March 2025 trial and helped narrate courtroom developments to the public.
    CBS Roanoke reporter Leila Mitchell covered the trial.
  • Gianluca Milani — Person · Referenced non-participant (absent parent) · 1 mention · first at
    Mentioned to explain Katlyn’s circumstances as a single mother and the lack of support from Milani’s father.
    Even with Milani's father out of the picture and while working full time as a restaurant manager.

Products & tech

  • Katlyn's iPad — Product · Evidence in investigation · 1 mention · first at
    Used as key evidence in the trial to place Trenton Frye at the scene of the crime via Bluetooth connection
  • TikTok — Product · Platform for advocacy and updates · 5 mentions · first at
    Used by Katlyn's family to share updates on the case, memorialize Katlyn, and advocate for justice

Full transcript with timestamps

♪♪ ♪♪ -I wanted to say that I know everybody doesn't agree on sharing this. I feel like I'm lost. And just hoping that one day Katlyn's story will help someone. I definitely needed somebody to be held accountable. I needed to tell Katlyn's story, you know? I needed people to know about her. She was beautiful. She was smart. And she loved to shop and dance. And she had so many friends. I always described her as glitter. She expressed her individuality through her hair. She always had different colors and it was always so cute on her.

I loved the purple on her. -She used to travel for those music festivals. I mean, she's been all around the world. Yeah, the shuffling queen. That's what we always say. -Yes! -She had the best sense of humor. She loved Milani. She loved her daughter. She was single. She, you know, she was getting a new apartment and she was starting over. -I mean, did you worry at all about her safety there? -No. I thought, man, she's near, you know? And I never thought this would happen. It never crossed my mind.

-She told me that something was wrong with Mommy and that Mommy wouldn't wake up. ♪♪ -I was woken up to a phone call. -Do you know what time it was? -5:35 AM. It was Jacob on the phone saying that Katlyn is unresponsive. They're doing CPR, and the EMS is there. -My sister called. She's like, "Sherry, get to Katlyn's right now. Something's wrong." And my only thought was, "Let me get to that baby." Who's up there with Milani? -Okay, thank you. -I grabbed her, and she just, like, melted into me. Yeah, it was -- It was pretty bad.

-I swear to God. They asked me, does she do drugs? Do I do drugs? Did you give her something? Did she take something? I was like, "I don't do drugs." -The police were adamant that it was a drug overdose. And I'm like, "She doesn't do drugs." -I genuinely believed she's going to be okay. She got CPR. She was alive. She had a heartbeat. She was going to be okay. -In the hospital, they even wano bring a chaplain in. And I was like, "No. My child's not gonna die. I don't need a chaplain in right now." A tech came to me and walked me. She said -- "It wasn't drugs. Someone hurt your baby."

Who would want to hurt her? I mean, she loved everybody. And everybody loved her, you know? She didn't have enemies. -That you were aware of. -Yeah. I will never stop saying my daughter's name, and I will never stop seeking justice for her. ♪♪ ♪♪ ♪♪

b ♪♪ -I walk into the hospital, saw my daughter there, and I watched them do CPR, and - I'll never forget that. -On October 7th, 2022, as Crystal Sale arrived at the hospital bedside of her daughter, Katlyn Lyon Montgomery, she knew the two people she needed most. And would you say your sisters have really stepped up for you? -Absolutely. I don't know what I'd done without my sisters. -The oldest of the sisters, Sherry Cox, was taking care of Katlyn's then four-year-old daughter, Milani, while periodically checking in on Katlyn in the hospital.

-I knew it was bad. -What did you think had happened to Katlyn? -I didn't know. -I called Sherry. The first thing she said is something was wrong with Katlyn, but they didn't know what. -Sherry told their youngest sister, Tina Hopkins, nearly 5,000 miles away in Hawaii, that 28-year-old Katlyn was unconscious and in grave condition. -You know, Sherry told me like, "You have to come home. It's not -- it's not good." -I was just shocked that this was even happening and -- just confused. -Especially when doctors told her that Katlyn sustained injuries to her neck and head.

-While first responders had initially thought Katlyn had suffered a drug overdose... -...her physical injuries and the lack of drugs found at the scene... -...indicated Katlyn was actualy the victim of a violent assault. -That she had been strangled. -We were all -- we were speechless. We're baffled. Like who -- who would have done this? -I got a phone call to take a strangulation report. -Lead investigator Robbie Burnee with the Bedford County, Virgin, Sherriff's Office focused on documenting Katlyn's injuries. -I saw two distinctive marks, pl to each other on her neck.

-Since those marks weren't visible until after Katlyn had arrived at the hospital, Burnette says it helped timestamp the attack. -It was very recent. -Like, when you say very recent -- -Within an hour or so, most likely, of when the call came i. -So her apartment's on the second floor. -Right on the end of the building? -Yes. -Shortly after learning about Katlyn's injuries, investigator Michelle Alderson was sent to secure and process Katlyn's apartment, now a crime scene, one that had been disturbed by first responders, EMTs, and Katlyn and her roommate Jacob Piercy's dogs.

-So my scene was not as exact as I would like my crime scenes to be. -Investigator Alderson set out to find what could have caused the injuries on Katlyn's neck. she found a huge clue wrapped up in Katlyn's comforter. -It was a multiple charging cord adapter. -Did they look like they matched what had been described on her neck? -I would call them consistent. Yes. -With the cords found on the bed, Alderson suspected that Katlyn was attacked there. But she soon learned that first responders, not suspecting foul play at that time, had given the family permission to wash Katlyn's sheets and clean up.

-Doesn't that make it difficult to obtain DNA, fingerprints? -Yes. Yes. Yes. -Investigators were unable to recover any DNA or fingerprints at the scene, including any on those charging cords. As they searched for evidence identifying Katlyn's attacker, doctors struggled to revive her. After 29 hours, Katlyn was offiy declared brain dead the next morning, October 8th. -I remember going to her and, one of the only things I remember is telling her I'm sorry that I couldn't protect her. ♪♪ I can say that there are no words that have been invented to describe how this feels.

It's excruciating. -I just can't comprehend that she's gone forever. Like I can't -- I can't go there. -Tina arrived just in time to help say goodbye. -My instinct is just to take charge and fix whatever's wrong. That affects me greatly. That I couldn't fix it for my sister and our family. -Tina documented the moment Katlyn was escorted to fulfill her final wishes to be an organ donor. Tina shared the video on TikTok. -My family and I have been through a tragedy. -She and the rest of her family started posting photos and videos...

-I'm going to talk about my niece. -Memorializing Katlyn. She liked music, right? -Oh, loved music. Specifically, electronic dance music. -Music that Katlyn had discovered with her older brother, Jake Lyon. -There was this, like, dance party type thing, and at the end of the night, she ran up and like, bear hugged me. She was like, I want to do this all the time. -Why? What is it? Tell me, what is it that she took to? -I think just the energy and the social element. Oh, she would draw a crowd. -She loved life. She absolutely loved life.

-A life that had changed unexpectedly when Katlyn learned she was pregnant with Milani. -I mean, we were very supportive and was like, you know, we'll help any way we can. -But the always independent Katt need much help, says Crystal. Even with Milani's father out of the picture and while working full time as a restaurant manager. -Katlyn was rocking it. She was rocking it. -What do you mean, rocking it? -She was providing for her child. -Katlyn's family now had to grapple with the reality that someone had intentionally taken her from her beloved child.

-I still can't believe my daughter was murdered. -She said, "You're going to find whoever did this to my daughter" I said, "There will be no stone left unturned." -So who's the first person you're looking at? -We definitely looked at Jacob Piercy, the roommate. -With no sign of forced entry and being the only other adult in the apartment, Katlyn's new roommate, Jacob Piercy, who had called 911 reporting her injured, was an obvious suspect. -Investigators told us that it was 99% sure he did it. -But Tina says she suspected this man, Katlyn's ex-boyfriend, Trenton Frye, whom she had broken up with ten days earlier.

-That was my first gut instinct. -You first thought Trenton? -I did. -Trenton lived three hours away in North Carolina, so investigators gave him a call. -He said that he was in North Ca working the entire time. He agreed to come up for an interview. Appeared to be cooperative. -So focus intensified on Jacob Piercy, especially when investigators learned what Milani said she witnessed that night. "My brother killed my mom." Brother was the nickname she used for Jacob Piercy. Did you have anything to do with hurting Katlyn?

-Absolutely not. ♪♪ b ♪♪ -Outfit of the day. Again, these videos are just for my sister, so I'm not going anywhere today. -Tina, you're not going anywhere today because your husband has stopped giving you lunch money. -For Tina, Crystal and Sherry, making TikTok videos started as a fun way to connect their family. That changed after Katlyn's death. -My niece was murdered. We don't have hardly any information. We felt wronged and we weren't going to stop fighting. -In those agonizing early days, Crystal was too deep in her grief to speak publicly.

So Tina stepped up to post updates on the case. -There is an ongoing investigation. -That investigation centered on Katlyn's roommate, Jacob Piercy. -We were looking at him pretty, pretty heavy at first. -What do you mean? -Meaning he was our number one suspect at that point. -In my mind, I'm just here to tell 'em what I can tell 'em. Help 'em figure out what could have happened, what couldn't have happened. I was in full denial. -But after being interviewed several times, having his body photographed for possible defensive wounds and his cell phone confiscated, Jacob Piercy knew he was in serious trouble.

Were you scared you'd be blamed for whatever happened to her? -Absolutely. You know, I'm the n suspect of something so terribl. -We're still at a loss at that point 'cause he's fully cooperating, and we haven't caught him in a lie yet. ♪♪ -What troubled investigators was four year old Milani's statement. She said she had seen Jacob killing her mother, but Burnette soon discovered that she had actually witnessed Jacob performing CPR. -She actually did the motions of her, with her hands of what Jacob was doing to her.

-Going like this. -Yep. Yeah. That's the motion she made. -To be sure, Burnette reviewed the 911 call. You can hear Jacob doing CPR. -You could tell he was definitely putting effort in. -I thought I had done enough, but I think that's what tears me up the most is just... I wasn't able to save her. You know. ♪♪ -At that point, investigators bn to look closer at Katlyn's ex-boyfriend, Trenton Frye. They tried calling him in North Carolina a couple of days after their initial conversation, but learned he was unable to talk to them.

-He checked himself into a mental health facility. -And what did that say to you? -He had some kind of break. Somg happened to him, apparently. -So investigators turned to Katlyn's friends to learn more about the relationship. Do you think he was the person he presented himself to Katlyn? -Absolutely not. -Hannah McDowell met Katlyn two years earlier when she landed a job at the restaurant Katlyn managed. ♪♪ Sharing a love for music and dancing, they became fast friends and eventually roommates. They also shared their frustrations about the local dating scene in Bedford County, Virginia, which prompted them to look for love online.

What was she looking for? -Well, she wanted someone that was supportive and be a father to Milani as well, and possibly get married. -In January of 2022, when Katlyn connected with Trenton on a dating app, the tall, fitness obsessed and apparently successful North Carolina native seemed to be marriage material. How had she described him to you? -Well, he had his stuff together. She was excited to have a relationship with him. -When Katlyn's aunt Sherry met Trenton, she admits she was impressed. -He told me that he owned a security company and he owned his own construction company.

We had talked about him doing my floors because he had me thinking he was, you know, this awesome builder. -Then eventually he was at the apartment all the time. -Which made Hannah wonder how Trenton, who lived three hours away, could spend weeks on end at their apartment while also running two businesses. -And when I would leave in the morning, when I would come home from lunch, when I would get home from work, he would always just be on the couch. -And she says, over time, it seemed Katlyn wasn't leaving the apartment much either.

-She was quiet. She didn't hang out with friends. She was just very isolated. -Did you get the feeling that it was because of him that she wasn't going out as much, dancing as much? -Yes. And he would track her location on her phone. I feel like she was -- chained to him, almost. -I can't say that I liked him, but I can't say that I didn't like him. -While Crystal had her concerns about the relationship with Trenton, Katlyn never confided that anything was wrong. -She's always been so strong, so I knew my daughter could handle herself.

-But Katlyn did express some frustration with the relationship to her Aunt Sherry. -She said, "I'm so tired of paying for everything." She said, "If he's got all this money, I mean, these businesses, why doesn't he have money?" And I said, "Well, Katlyn, that's a red flag right there." -More red flags appeared when he tried to convince her to move with him to North Carolina, where he said he would find them an apartment. -In reality, he was not reliable and wasn't fulfilling what she thought he was going to do. -In early September 2022, Trenton admitted the truth -- he couldn't find an apartment because he lacked the credit and source of income to qualify.

-Katlyn called me from work and she was screaming and crying, just like bawling, crying. And she was like, "He's a liar. He lied about everything. He doesn't have a job." -Days later, Katlyn announced she was breaking up with him. She was done? -She was done. -So she cut him off. -She did. She blocked him. -Oh, she actually blocked him,. -She blocked him. Yeah. -And that's when Katlyn learned her friend Jacob Piercy was also looking for a place and asked if he wanted to find an apartment with her and Milani. -They finally found this one apartment, and we were so excited that they were going to be so close to us.

-While Katlyn was making a fresh start, it seemed Trenton Frye did not want to let her go. -He was actually sitting in the parking lot of her apartme, watching everything Katlyn was doing. ♪♪ ♪♪ -Have you seen a big change in your sister? -Mm-hm. She's just sad all the time. She has bags under her eyes now where she didn't have them befoe because she don't sleep. She's not sleeping. -I woke up this morning in sheer panic. -In the days following Katlyn's death, Crystal began sharing her grief with others on TikTok.

-I'll get a... ...[sighs] a text message, and for an instant I'll think that it's Katlyn. ♪♪ -I ended up seeing some of her TikToks by accident. She was completely innocent. She didn't do anything wrong. ♪♪ -Investigator Burnette was convinced that Trenton Frye had somehow gotten into Katlyn's apartment and strangled her. ♪♪ Why did Trenton Frye kill the woman he said he loved? -I think it's because she told him no, and he couldn't -- he couldn't take the rejection from her. -Investigator Burnette now needed to prove it.

-We started looking at obviously more of his cell phone records, tracking that history. -We found that his phone pings were in the area of Forrest, Virginia. ♪♪ -Commonwealth Attorney Wes Nance was assigned the case. He says investigators were able to obtain Trenton Frye's cell phone after he checked himself into that mental health facility in North Carolina. And that's how they learned that the device had started pinging off a cell tower in Virginia on October 4th, three days before Katlyn's attack. ♪♪ -He wasn't just in Virginia.

He was in at least the area of Katlyn's new apartment complex. -Investigators canvassed the apartment complex and found two of Katlyn's neighbors, who remembered seeing an unfamiliar man sitting at a picnic table for hours. One snapped a photo of the stranger on the afternoon of October 6th, the day before Katlyn's attack. Who do you believe that is? -Well, we'd later determine it to be Trenton Frye. -How close to Katlyn's apartmen? Why there? -So this is an elevated vantage point. It looks directly down on her building.

-Did Katlyn Montgomery have any idea that somebody had been watching her for days? -No. No, ma'am. -And does it appear that she wasn't just being watched? She was being followed and stalked? -Yeah. Absolutely yeah. ♪♪ -Investigators learned two hours after that photo was taken, Trenton Frye's SUV was recorded by a surveillance camera pulling into a gas station near the apartment complex. He was seen inside the store, now wearing all black. It was around that time that Frye texted Aunt Sherry. -He wanted to know if I still wanted my floors finished, and I didn't respond back to him.

I immediately called Katlyn. Well, she unblocks the number and tells him, "Do not call my aunt anymore." -The texts between Katlyn and Trenton Frye, says Prosecutor Nance, became heated. Frye made it clear he knew she was living with Jacob Piercy and he didn't like it. -So there's an anger and jealousy underlying those text messages. Um, he starts to call her a piece of (bleep) and tell her that karma is a bitch. -Jacob Piercy says that Katlyn called him, sounding frightened. -At one point she told me that she wanted to go to her mom's house and pick up her self-defense weapon, that she has. Her pistol.

♪♪ -Katlyn didn't go through with that plan. Later, Jacob, Katlyn, and Milani had dinner together and watched. Around midnight, Jacob says he heard a noise near their second floor balcony. -Spread open the curtains real quick to look. I didn't see anything. -Did you lock or unlock the sliding door? -Yeah, I believe I locked it. -But investigators later learned the lock on the sliding glass door was broken, and they suspected that's how Trenton Frye gained entry. His Google searches revealed that he had looked up the layout of the unit, which they believed helped him find Katlyn's bedroom.

-I think it was an absolute brutal, sudden sneak attack on a then-sleeping Katlyn. -Frye strangled Katlyn, investigators say, with those charging cords while her daughter Milani slept nearby. -With her child laying beside her. I don't think it gets much worse. ♪♪ -After Frye left, says Nance, Milani alerted Jacob Piercy that something was wrong with her mother. ♪♪ Trenton Frye's digital footprint from that morning, says Nance, gives him away. -Mr. Frye started to Google breaking news, and specifically he looked to see if he had any arrest warrants out for himself.

-There weren't any warrants for him at the time... ...but 13 days later, investigators have one in hand as they travel to the mental health facility in North Carolina. -Trenton Frye agreed to talk to investigators and denied any involvement in Katlyn's death. He said he had checked himself into the hospital because the only person he had ever considered harming was himself.

-He did finally admit he had been in Virginia, but claimed he was only looking for a job and apartment, hoping that he could eventually convince Katlyn to get back together. -But when challenged with evidence that he was at her apartment complex... -...Trenton Frye claimed he had no memory of it, that he sometimes blacked out for long periods of time, including the hours around Katlyn's attack.

-Investigators had heard enough. -Just turn around for me, pleas. -...and took Trent Frye into custody. ♪♪ And how did you feel that he had been arrested? -Relieved that somebody was going to be, you know, held accountable. -Trenton Frye was charged with first degree murder and pleaded not guilty. -There's no evidence, no hard evidence, nothing you can point to to prove that Trenton was ever in that apartment. -Trenton Frye's defense attorney, Joseph Sanzone, insists his client didn't kill Katlyn. He prepared to argue at trial that there wasn't a murder at all.

-I don't think anybody tried to kill Katlyn. I think it was purely an accident. ♪♪ ♪♪ -Today marks two months, two months from the last time that I told my daughter I loved her. Tomorrow marks three months. Today is 16 months. It's been 25 months since my 28-year-old daughter was murdered. -As the months dragged on awaiting trial, Crystal and her family demanded justice for Katlyn on billboards purchased around town. -We now have a new court date. This one should be it. And I pray to God that it is. -Trenton Frye entered the courtroom in March of 2025, two and a half years after Katlyn's death.

-Her family was there, her brothers were there, her aunts were there. -CBS Roanoke reporter Leila Mitchell covered the trial. -Prosecutors argued that Trentoe stalked, obsessed over, and ultimately strangled Katlyn Lyons. -Leila Mitchell reported on TV. Katlyn's family updated their growing community of supporters on TikTok, while prosecutor Wes Nance made his case to the most important audience - the jury.

-Mr. Frye had given a number of inconsistent statements. What I would absolutely characterize as lies, because they were all in conflict with one another. -But prosecutor Wes Nance didn't have to rely on Frye's memory. Not only did he have the digital data from Frye's phone placing him in the area, investigators had also discovered that his device made one very important connection after Katlyn and her daughter went to bed.

-Frye's phone had automatically connected to Katlyn's iPad via Bluetooth, providing the only evidence, says Nance, that placed Frye inside Katlyn's apartment. -Now we have the two of them within feet of each other during the window of the injuries. -And what about that sound that Jacob Piercy heard earlier that evening? Nance believes that it was Trenton Fry positioning this metal bench that belonged to their downstairs neighbor on the brick wall under their balcony.

-Trenton Frye's defense attorney, Joseph Sanzone, concedes that Frye, devastated after the breakup, was in the area and admits that Frye was at Katlyn's apartment complex, but says he was only outside. -I agree with the billboards in this case. Justice for Katlyn, but it should happen after a rew of all the evidence. -He points to the lack of DNA evidence at the scene and disputes the prosecution's iPad-Bluetooth connection theory. -We don't know where the iPad was. -And that's because the iPad was recovered by investigators at Aunt Sherry's house.

She told them she grabbed it from Katlyn's apartment when she picked up Milani after the attack. But it was in the apartment, right? -Well, no, we don't know that. We just know it connected. -Would you admit, though, that he's a pretty unlucky guy, that he happens to be outside the apartment when someone else kills his ex-girlfriend? -Yeah, and whoever did it in that circumstance is the luckiest guy. -Jacob Piercy, the man who found Katlyn Lyon unresponsive, took the stand to testify today. -Jacob Piercy, Sanzone argued, was the more likely killer.

What would be Jacob Piercy's motive for killing Katlyn? -I don't think anybody tried to kill Katlyn. I think it was purely an accident. -Sanzone suggests that Jacob Piercy strangled Katlyn in a consensual sex act - one that went too far. -I was furious. He degraded -- he humiliated my daughter. Oh, I was -- I was so mad. -The medical examiner found no evidence of any sexual assault or even recent sexual activity. This is not sex gone wrong. This is a murder. -A murder, Sanzone says, Trenton Frye couldn't have committed, saying it was impossible for Fre to get into Katlyn's apartment, kill her, and get away without waking anyone, especially the dogs.

Isn't it possible that someone slipped into the apartment quie, strangled her and left, and not alarmed the dogs? -Only Tom Cruise can do that, as far as I know. I just can't imagine. In real life. -Sanzone has a witness whom he believes can help make his case. Trenton Fry himself. ♪♪ ♪♪ -Did you expect Trent to take the stand? -I didn't. I was shocked. -When Trenton Frye took the stad to tell the jury his story, he appeared to have regained his memory of his actions that night.

-If they don't hear from your client, they're not going to believe what you say. They need to hear from the person. -Prosecutor Wes Nance challenged Frye's story. -But Frye remained adamant that he could not have killed Katlyn.

-But Nance says that gas station surveillance photo of Frye, taken hours before the murder, proves that he dressed the part. -A ninja is known for being in stealth mode, and I think changing his outfit to black is him going into stealth mode.

-But would that add up to reasonable doubt for the jury? -Today, the jury will be told that they can either find Trenton Frye guilty of first degree murder, second degree murder, or they can find him not guilty at all. -All of our nerves are on edge. So wish us all luck today. It's going to be rough. -We weren't going to leave, whether it was an hour or 20 hours. -But you didn't have to wait very long, did you? -No. -The jury wasted no time today, deliberating for just about an hour. -Because it came back so quick, I was very concerned that it didn't go the way that we wanted.

-Moments later, Crystal heard the three words she had been praying for. -Guilty. First degree. -Trenton Frye was found guilty of first degree murder in Katlyn's death. -I was staring at his face the entire time, and he had no reaction when the verdict was read, Katlyn's family burst into tears. -Having Trenton Frye be accountable for his actions does bring our family a little bit of peace. -Tina, flanked by her sisters and Katlyn's brothers, announced the verdict to their supporters. -This entire process has been brutal for our family.

-Four months later, they returned to court for Trenton Fry's sentencing. -This man didn't just take a life. He destroyed a family. -Katlyn's brother spoke about the impact on Milani. -He left my niece to wake up next to her mother's lifeless body. She now lives in fear of the dark and the monsters that come into your home while you're sleeping. -I begged God too many times to count, to please, please take me. Let me die because the pain is unbearable. -Crystal was clear what she hoped for her daughter's killer. -I was sentenced to a lifetime without my daughter.

Milani was sentenced to a lifetime without her mama, so. He needs life. -Trenton Frye turned to Katlyn's family. -But he never took responsibiliy for Katlyn's murder... -...responsibility that Judge James Updike reminded him was his alone.

-Life in prison. -Even though we got the verdict we wanted, my daughter's still not here. If I could walk out of that courtroom and hugged her, Then I would have won. Nobody won. ♪♪ I think that everyone that has lost their lives to domestic violence, their names need to be said. -Crystal's TikTok videos are now focused on sharing Katlyn's experience and hoping her story could help save someone else. -I don't want another mother, another family to go through what we're going through. I have to be my daughter's voice and I have to help save other women.

-She and her family have embraced the man who did all he could to save Katlyn -- Jacob Piercy. -He's a hero. She needed him, and he was doing everything he could to help her. -They opened up and welcomed me to Christmases and Thanksgivings and hang outs and birthdays and cookouts, and they've really made me feel like part of the family. -A family still adapting in Katlyn's absence. -Feel my head. It's burning up. -Crystal enjoys a familiar role as Milani's grandmother, while Aunt Sherry, who always shared a special bond with Katlyn and her little girl, has become Milani's guardian.

What does she call you? -She calls me Mama now, Mommy. -Was that hard for you at first? -Yes. Because I didn't want my sister to be upset. Because I didn't want her to think I was taking Milani from Katlyn, erasing Katlyn. -I was like, absolutely not, you know? You are her mommy now. She knows she's got Mommy number one that had her, Katlyn. But you're her mommy now. -Milani will get to know her first mom through the journals she left. -"Your younger self would be so envious of where you are now. You're such a hard worker and such an amazing mother."

-Katlyn as she saw herself. -"You're beautiful, powerful and so strong." -Her final entry focused on one subject. Love. -"I am loved. I deserve to be loved. I am worthy of love." She knew that she was loved. -She still is. -Very much so. ♪♪♪ ♪♪ ♪♪

Questions about this episode

Who speaks in "The Sneak Attack on Katlyn Lyon | Full Episode"?

Crystal Sale (Guest), Sherry Cox (Guest), Tina Hopkins (Guest), Jacob Piercy (Guest), Trenton Frye, Robbie Burnette, Wes Nance, Leila Mitchell.

What is "The Sneak Attack on Katlyn Lyon | Full Episode" about?

The content recounts the tragic story of Katlyn Lyon, a vibrant woman who was loved by many and known for her individuality and zest for life. Following her unexpected and tragic passing, her family and friends seek to share her story, confronting the challenges of grief and the police's assumption of a drug overdose, despite their disbelief in that narrative.

What is mentioned in this 48 Hours episode?

12 people, works and ideas are mentioned, including Trenton Fry, Katlyn Lyon Montgomery, Crystal Sale, Jacob Piery, Sherry Cox, Katlyn's iPad. Each one on this page links to its own page with every episode that mentions it.

How long is "The Sneak Attack on Katlyn Lyon | Full Episode"?

The episode runs 42 min; the transcript is about 5,069 words in 55 timestamped sections.

More from 48 Hours

About this transcript: the episode's spoken words as captioned on YouTube, split into timestamped sections. Reclip.Me locates every person, work and idea in the text, keeps the time it is first named, and quotes the words around it verbatim. Last updated February 8, 2026.