America's Crime Lab: "The Idaho Student Murders: DNA in Real Time Part 2"

Podcast: America's Crime Lab
Episode Date: September 17, 2025
Main Focus: The complex investigation into the 2022 University of Idaho student murders, highlighting the trauma of surviving roommates, the painstaking collection and analysis of forensic evidence, and the real-time application of advanced DNA technology in an active case.

Episode Overview

This episode continues the in-depth examination of the shocking murders of four college students in Moscow, Idaho. The hosts and guests recount the survivors' experience, the harrowing discovery of the crime, the crucial but initially unhelpful DNA evidence, the onslaught of misinformation and public speculation, and a behind-the-scenes look at how forensic genetic genealogy—typically used in cold cases—was deployed in real time to catch a killer.

Key Discussion Points & Insights

1. Survivors’ Trauma and the Discovery of the Crime

• Bethany, one of the surviving roommates, describes the terror and confusion upon discovering something was terribly wrong that morning.

  • “I was so frantic that morning and scared to death not knowing what had happened. And when I made the 911 call I couldn't even get out the words.” (Bethany, 02:51, 16:26)

• The initial call to 911 reported an “unresponsive roommate,” not a murder—reflecting the total confusion of the moment (05:12).

• Inside the house:

  • Police expected a party-related emergency but encountered a gruesome crime scene (05:43–06:54).
  • The bodycam footage, recently released, is described as “absolutely heartbreaking” and exposes the chaos and distress of the first responders (04:31).

2. Reconstructing the Night: Timeline and Events

• Surviving roommates’ recollections:

  • Bethany and Dylan were up watching TV when the murdered roommates returned home from a bar, hung out, and ate (09:02).
  • Both survivors heard unexplained noises late at night but, in a noisy, crowded college house, dismissed the disturbances (10:09).
  • Dylan later hears someone say, “someone’s here,” and sees a man in a ski mask with bushy eyebrows—she freezes in terror as he passes her (11:18–13:10).
    • “She sees a man dressed in all black with a black ski mask covering his face. All she can see is just the eyes and nose area with what she describes as kind of bushy eyebrows.” (Ashley Jennings, 13:03)
  • The two believe, at first, that everything must be a prank or misunderstanding, not a massacre (13:39–16:16).

• Key Quote:

  • “I thought that we were going to wake up and go upstairs, see them and tell them how they had scared us and that they were going to tease us about how we are constantly scaredy cats.” (Bethany, 15:57)

3. The Evidence: DNA and More

• Crucial Evidence:
  • A leather knife sheath found next to the victims contained DNA, but no matches were found in CODIS—a national database (19:38–19:47).
    • “We know that the Idaho State crime lab is able to pull DNA off of that knife sheath and very quickly develop a DNA profile. And it’s done in just a matter of days. But when they upload the DNA profile to CODIS, there are no hits.” (Host/Narrator, 19:47)
  • Surveillance video of a white Hyundai Elantra moving suspiciously in the area becomes another critical lead (21:24–21:54).

4. Media Frenzy, Online Speculation, and the Impact on Survivors

• Misinformation and Harassment:
  • Innocent bystanders, including a “guy in a white hoodie,” are falsely accused online (25:26).
  • Surviving roommates and other students are inundated with suspicion, harassment, and invasive speculation (26:05; 40:17–40:43).
    • “At the same time, I was getting flooded with death threats and hateful messages from people who did not know me at all or know the dynamic of our friendship. ... The media harassed not just me, but also my family.” (Bethany, 40:43)
  • Families are further traumatized by aggressive media requests for private information, such as autopsies and academic records (41:18–42:02).

5. Forensic Genetic Genealogy: A New Tool in Real Time

• Turning Point for the Case:
  • With no leads, Idaho State Police suggest sending the knife sheath DNA for forensic genetic genealogy (28:28–28:42).
  • Othram, a specialized lab, is contacted for help—something they typically do for cold cases, not ongoing investigations (29:12, 29:48).
    • “We weren't having any luck up to that point. ... Send the DNA sequencing out and see if we can't find some distant relative match that we could then start tracing down that family tree.” (David Mittleman, Othram, 28:42)
  • Chain of custody is paramount: Police captain personally escorts the evidence from Idaho to Texas, ensuring its security (31:21–32:21).
    • “I left Boise around 6 o’clock that morning, flew straight to Houston with the DNA sample with me. Then I was extremely nervous that I was going to screw the whole thing up.” (David Mittleman, 31:59)
  • Othram’s team works through Thanksgiving, running DNA profiles and keeping all details under strict confidentiality (37:24).

6. Breakthroughs through DNA Analysis

• Preliminary Results:
  • The DNA indicates a male of primarily European and specifically Italian biogeographical ancestry, eventually pointing to a multigenerational American family from Pennsylvania (38:20–38:42).
    • “We learn the person we're looking for has a largely European background and also has this unique biogeographical ancestry tied to Italy. And this eventually leads us to a multi-generational American family in Pennsylvania.” (Emily Maitlis, 38:21)
  • Investigators match the clue of the missing front license plate (legal in Pennsylvania) with the Hyundai Elantra, narrowing the search to only a handful of vehicles (39:05–39:14; 43:35).
    • “They were able to narrow their search of white Hyundai Elantras with Pennsylvania plates. And believe it or not, there were only a couple cars that had Pennsylvania plates that actually matched the description of the car seen at the crime scene.” (Kristen Mittleman, 43:35)

7. Personal Cost and Ongoing Struggles

• Family Grief:
  • Heartfelt accounts from Ethan Chapin’s family, describing empty seats at Thanksgiving and their struggle to grieve amid public scrutiny (36:21–37:10).
    • “You sit down at a place that you spend a lot of time with as a family and you sit at ... that table and you have an empty chair. ... We're a four person family now, but it's tough.” (David Mittleman & Kristen Mittleman, 36:47–37:10)
• Ethical Questions:
  • Both hosts and participants reflect on the toll that true crime attention and social media speculation take on real victims and families (42:10–42:27).

Notable Quotes & Memorable Moments

• “She hears someone crying. And then she hears a man's voice that she doesn't recognize, say, ‘you're gonna be okay. I'm going to help you.’ ... She says, the guy's voice, he didn't say that in, like, a nice way. It's more in—she says, a weird tone, spooky.”
  (Host/Narrator & Ashley Jennings, 12:05)
• “It's like the truth is there, but they have to essentially crack the code.”
  (Bethany, 28:23)
• “Every day since November 13, 2022, every single day, there has been something. ... I don't want to call it a battle, just something that you are fighting.”
  (Host/Narrator, 42:27)
• “There are four kids that are dead and a perpetrator out there. And this is what we do. So why would we ever turn this case away if the evidence is suitable?”
  (Kristen Mittleman, Othram, 30:31)
• “We're not just here to tell you what's happening, but why.”
  (Host/Narrator, recurring motif)

Timestamps for Key Segments

• Survivor’s Account & Initial Discovery: 02:51–16:26
• Bodycam and First Responder Reactions: 04:31–07:01
• Timeline of Night’s Events: 09:02–16:16
• Evidence Overview & DNA Limbo: 19:38–21:12
• Hyundai Elantra Lead: 21:24–23:08
• Public Harassment & Media Ethics: 25:26–27:49, 40:17–42:10
• Introduction of Forensic Genetic Genealogy: 28:28–31:02
• Chain of Custody & Lab Story: 31:21–32:21, 35:08–37:24
• Breakthrough in DNA Analysis: 38:02–39:14, 43:35
• Family Impact & Ethical Reflections: 36:21–37:10, 41:18–42:27

Episode Structure

• [02:51] Survivor testimony and emotional aftermath.
• [09:02] Reconstruction of events leading up to the crime.
• [19:38] Review of major evidence and DNA dead ends.
• [21:24] Identification and pursuit of the suspicious vehicle.
• [25:26] Social media blitz, misinformation, and the hunt for suspects.
• [28:28] Introduction and adoption of advanced DNA technology.
• [31:21] Chain of custody concerns and the journey to Othram.
• [37:24] Othram’s 24/7 lab efforts and breakthroughs.
• [40:17] The toll on survivors, victims’ families, and media scrutiny.
• [43:35] DNA breakthrough zeroes in on suspect’s location and car.

Tone & Style

The episode is factual, emotionally grounded, and driven by personal testimony, while also giving listeners a gripping, step-by-step look at how investigators utilize state-of-the-art science under immense pressure. The hosts maintain empathy and ask critical questions about privacy, trauma, and the role of the public in high-profile criminal cases.

Next Episode Tease:
A hint at the killer’s subsequent attempts to evade capture and the final forensic steps to unmask the suspect, promising a deeper dive into the intersection of law enforcement, science, and justice.