Watch
  • TLC UK
  • discovery+

Bloodline Detectives

  • 2020 – 2025
  • Returning Series
  • Documentary · Crime
  • 5 seasons
  • 7.5/10

Detectives and forensic experts recount the most extraordinary cold cases that were solved using the revolutionary technique of familial DNA testing.

Latest: Season 5 · 2024

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Bloodline Detectives focuses on familial DNA investigation, a search technique which uses genetic material from relatives to track down a suspect to solve violent crimes. Each episode shows detectives from all over the world solving cold cases by using the DNA of family members and how that additional DNA information is revolutionising genetic profiling to solve criminal cases.

  1. E1. The Body in the Blanket

    Sep 4, 2024 · 45m

    In 1996, two workers report that they found a body rolled up in a blanket on the side of the road near Grand Rapids, Michigan. Detectives quickly identify the victim as Sharon Kay Hammack, but her killer identity remains unknown for years

  2. E2. Evil Angel

    Sep 11, 2024 · 45m

    In 2015, a woman is viciously assaulted while running in an Albuquerque, New Mexico park. Investigators unable the find the perpetrator, until they learn about a new forensic technic that could break this case.

  3. E3. The Book Store Murder

    Sep 18, 2024 · 45m

    In 2010, a great-grandma Sherry Black is found murdered in her own bookstore in South Salt Lake, Utah. It took 11 years for police to find evidence to charge and convict her killer.

  4. E4. The McClintock Park Murders

    Sep 25, 2024 · 45m

    Wisconsin 1976. 25-year-old David Schuldes and 24-year-old Ellen Matheys are murdered in a park. The case goes cold until 2015 when new DNA science is found.

  5. E5. Strangled in the Sand

    Oct 2, 2024 · 45m

    The 1994 murder of Clare Holman in Borrego Springs, California went unsolved for decades. Determined investigators got their breakthrough when new advancements in DNA technology have arrived.

  6. E6. Terror in Garden Grove

    Oct 9, 2024 · 45m

    In 1976, 19-year-old Janet Stallcup goes missing in Garden Grove, California while on her way to a party. Eight days later, her body is found in her car. The case runs cold until 2020 when genetic genealogy solves her murder.

+14 more episodes — open all seasons to browse every episode.

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