A chilling 911 call from Shannan Gilbert leads to the discovery of the bodies of Melissa Barthelemy, Amber Costello, Maureen Brainard-Barnes, and Megan Waterman on Long Island's Gilgo Beach, each sharing harrowing similarities: they are all wrapped in burlap and thought to be the victims of a single, unknown killer. Joseph Scott Morgan and Dave Mack take a closer look at the "Gilgo Beach Serial Killer" case, the crucial arrest of Rex Heuermann, and the groundbreaking use of forensic DNA, genetic genealogy, and physical evidence. They weave through the disturbing intricacies of the crime scene, the systematic preservation of the bodies, and the indelible impact on the Long Island community. Highlighting the importance of a careful examination of evidence, from weathered burlap to human hair, they shed light on the grueling process of analyzing skeletal remains and the complexities of such investigations. 
 
Time-Codes:

[00:00:20] Joseph Scott Morgan introduces the concept of sackcloth, a symbol often associated with mourning, and links this to the eerie use of burlap in which victims' bodies were discovered on Long Island, New York. He reveals the episode's focus on the unsolved Gilgo Beach murders.
[00:02:00] The discovery of at least 11 bodies and disturbing details about four of the victims, all seemingly linked to a singular, unidentified killer.
[00:04:00] - Dave Mack recounts the harrowing story of Shannan Gilbert, whose 23-minute-long 911 call ironically led to the unearthing of several bodies. 
[00:07:00] - Joe Scott expounds on the idea of geographic profiling and its relevance to the Gilgo Beach case, providing a unique understanding of the killer's methods.
[00:09:20] - Potential significance of the killer's use of camouflage burlap.
[00:14:09] - Discussion on the difficulties in determining the cause of death from skeletal remains and explanation of the need for a forensic anthropologist in complex cases, highlighting their critical role in helping to unravel the mystery of unidentified remains.
[00:19:00] - Focus on the importance of careful handling of evidence, stressing the potential for significant clues being held within items such as the burlap sacks.
[00:21:00] - Joe Scott discusses the possibility of finding tool marks on bones and the implications of such findings. He emphasizes the potential of these minor details to unravel larger truths.
[00:26:27] - Dave Mack probes the potential evidence left behind as a body decomposes in a burlap bag and questions the potential clues that can be unearthed even from decomposition.
[00:28:40] - Joseph Scott Morgan shares his reaction to the news of an arrest in the Gilgo Four case: the apprehension of Rex Heuermann, introducing a potential end to the long-unanswered questions.
[00:30:00] - Details about suspect Rex Heuermann, community reactions to his arrest, and discussion on how cutting-edge technology is helping to solve decade-old mysteries, giving victims' families hope of closure.
[00:34:43] - The role of behavioral analysis in identifying common patterns among the victims is discussed.
[00:37:14] - Delving into the forensic details of how Rex Heuermann’s wife's hair ended up at the crime scene and the role of CODIS in the investigation.
[00:39:10] - Explanation of how cell towers and triangulation were used to track the suspect's burner phone.
[00:40:00] - Key evidence reveal - a discarded pizza box from which the suspect's DNA was retrieved and an explanation of the process of extracting DNA from saliva on a pizza crust.  
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