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The Last Ride | 53 Years Later, DNA Reveals Who Murdered Two Teenage Sisters

Crime Weekly

Hosted by Derrick Levasseur and Stephanie Harlowe

38m
Transcript

Original podcast

Summary

Written by a model from the transcript; not yet reviewed.

In May 1973, eighteen-year-old Maggie Jenkins and her sixteen-year-old sister Mary traveled from New Jersey to Key West for a spring trip, but after running out of money, they vanished while hitchhiking north. A man walking his dog the next day discovered their bodies in the woods near Key Largo, revealing they had been severely beaten and shot. Fifty-three years later, forensic genetic genealogy and DNA extracted from a blood stain on one victim's underwear finally identified the killer as David Allen Snyder, who lived in Key West at the time and died in Idaho in 2008. The hosts examine how cold case investigations, preserved evidence, and modern DNA technology continue to bring answers to grieving families decades after a crime.

  • Preserving physical evidence properly during original investigations is critical because it allows future DNA technology to solve decades-old cold cases. 17:22
  • Forensic genetic genealogy uses partial DNA profiles and genealogical databases to identify suspects through distant relatives. 25:08

Chapters

  1. 0:14
    Crime Weekly Mission & Funding Intro

    Hosts introduce the episode, explain Crime Weekly’s mission and announce new funding for a cold case investigation.

  2. 1:44
    Impact on Families and Future Investigations

    Discussion of how the case closure affects the victims’ family and the potential for uncovering related crimes.

  3. 15:11
    Geography of the Missing Hours

    The hosts explain the distance between Stock Island and Key Largo, outlining the likely route the perpetrator took with the victims.

  4. 25:03
    DNA Evidence and Genealogical Breakthrough

    The episode details how preserved DNA from 1973 was reanalyzed, leading to a genetic profile that identified the killer.

  5. 30:33
    Identification of the Suspect David Allen Snyder

    The hosts reveal the name of the killer, discuss his background, and explain why he could not be charged.

Highlights

  • 2:10

    Discovery of the Sistersstory

    In May 1973, a dog walker found the bodies of teenage sisters Maggie and Mary Jenkins in the woods near Key Largo after they disappeared trying to hitchhike home.

  • 3:36

    Normal Teenagers Travelingstory

    Family members described the Jenkins sisters as normal teenagers who simply wanted to travel, enjoy music, and make money.

  • 6:02

    Disturbing Perpetrator Statisticsdata

    Studies discussed by the hosts indicate that around thirty percent of surveyed men would commit a sexual assault if guaranteed they would never get caught.

  • 16:27

    Preserved Crime Scene Evidencestrategy

    Monroe County investigators collected and preserved crucial evidence from the 1973 crime scene, including the clothing worn by the victims, which ultimately enabled future DNA testing.

  • 24:45

    DNA Extraction from Underweardata

    Analysts successfully pulled a partial male DNA profile from a blood stain found on one of the victim's underwear.

  • 25:49

    Genetic Genealogy and Othrumstrategy

    Investigators partnered with the private lab Othrum to use forensic-grade genome sequencing, comparing profiles against genealogical databases to build family trees.

Quotes

  • “In 2018, detectives from the sheriff's office and the Florida Department of Law Enforcement, they developed additional genetic markers from that partial profile. They entered it into CODIS, the National DNA Database. There was no match.”
    Stephanie Harlowe · 25:03
  • “The man who killed Maggie and Mary Jenkins had been identified. His name was David Allen Snyder. Records show Snyder lived at several addresses in Key West between 1972 and 1974.”
    Stephanie Harlowe · 30:33
  • “When two teenage girls were standing on Stock Island with their thumbs out in May of 1973, he was living right there. And he was never caught.”
    Stephanie Harlowe · 30:45
  • “The only way to avoid it is to not get into that car in the first place.”
    Derrick Levasseur · 19:38
  • Aura House 12:26–14:52
  • Mint Mobile 22:31–24:38

About this episode

On the morning of May 3rd, 1973, a man out walking his dog in Key Largo, Florida, stepped into a stretch of woods about a hundred yards off U. S. 1. Near mile marker 99.5, under a layer of sticks, leaves and dirt, he found two teenage girls. They were sisters. Maggie Jenkins was 18. Mary Jenkins was 16. They had come down from New Jersey for a spring trip to Key West, and less than 24 hours earlier, someone had seen them standing on the side of the road with their luggage, trying to hitch a ride home. For 53 years, nobody could say who stopped for them. This September, that finally changed.

Transcript

0:00
38:51

7,641 words · 2 speakers

Speaker names marked are inferred from speaking time and the show’s known hosts — they are not voice-verified.

Topics

  • DNA
  • Florida
  • New Jersey
  • Key West
  • Key Largo
  • Stock Island
  • Othrum
  • WSVN
  • Florida Department of Law Enforcement
  • Criminal Coffee

Page updated · transcript and summary are machine-generated