Forensic Files Unsealed

This episode details the record-breaking resolution of a 45-year-old cold case involving the 1980 murder of Michelle "Missy" Jones. After decades of silence, Corporal Kathryn Clark of the Fontana Police Department reopened the investigation in 2020, utilizing modern DNA technology to re-examine evidence preserved from the original crime scene. The breakthrough occurred when investigators surreptit...

This episode provides a comprehensive look at textile forensics, a branch of science that examines microscopic fibers to solve criminal cases. Rooted in Locard’s Exchange Principle, the field focuses on how materials are transferred during physical contact to link suspects, victims, and locations. The source details various analytical methods, including microscopy and spectroscopy, which help expe...

This report details the mysterious disappearance of Melissa Casias, a security-cleared employee at Los Alamos National Laboratory who vanished from northern New Mexico in 2025. While she was last seen on surveillance footage walking alone with a backpack, the investigation is centered on the discovery of her factory-reset mobile devices left behind at her residence. These wiped phones have fueled...

After more than three decades, law enforcement officials in Illinois have finally identified a suspect in the 1993 murder of Randy Gail Sperino. The breakthrough in this cold case was made possible through forensic genetic genealogy and advanced DNA sequencing provided by a specialized laboratory. Authorities recently arrested Albert L. "Buddy" Zigler, a 70-year-old man who allegedly confessed to...

This detailed case study examines the investigation and apprehension of Philip Markoff, a medical student known as the "Craigslist Killer" who targeted women through online classifieds in 2009. The episode describes how Markoff maintained a polished public facade while secretly committing a series of armed robberies and a murder to potentially fund a gambling addiction. Law enforcement successfull...

This episode details the posthumous identification of Oscar Chotos Bolanos as the perpetrator in the 1983 cold case murder of Robert Lee Pangborn in Guerneville, California. Although the suspect died of natural causes in El Salvador shortly before he could be extradited, modern forensic DNA technology and investigative genealogy provided definitive closure after four decades. The investigation lin...

Recent developments in the Nancy Guthrie case highlight a major shift in forensic science through the use of genetic genealogy, the same technology that identified the Golden State Killer. This investigative method combines DNA analysis with public ancestry databases to trace family trees and uncover suspects who were previously impossible to find. By identifying distant relatives, law enforcement...

In May 2026, authorities in Raleigh, North Carolina, arrested Roger Shane Riddick for the 2019 murder of Jorge Alberto Zelaya. This breakthrough occurred after advanced DNA testing and forensic techniques, which were unavailable during the initial investigation, successfully linked the suspect to the crime scene. Zelaya’s body had been discovered years earlier with fatal stab wounds in a local par...

This source recounts the investigation and eventual resolution of the 1982 murder of thirteen-year-old Sarah Geer in Cloverdale, California. After the case remained unsolved for over four decades, authorities utilized forensic genetic genealogy to identify James Oliver Unick as the primary suspect. Investigators secured a definitive DNA match by surreptitiously collecting a discarded cigarette but...

This source details the dramatic capture of Dennis Rader, the serial killer known as BTK, through the lens of modern digital forensics. After terrorizing Wichita for decades and disappearing into a seemingly normal suburban life, Rader’s own narcissism led him to resume contact with the authorities in 2004. He mistakenly believed that electronic communication was untraceable, but investigators suc...

This episode examines the high-profile murder trial of the suspects involved in the 2024 killing of Jacksonville rapper Julio Foolio. It highlights how digital forensics, including cell site location data and social media activity, allowed investigators to reconstruct a timeline of premeditation and coordination linked to long-standing gang rivalries. The episode details the specific roles of defe...

This episode explores five landmark criminal investigations where scientific breakthroughs were the primary force in identifying and convicting perpetrators. It highlights how evolving techniques like genetic genealogy, DNA profiling, and forensic botany have successfully closed notorious cold cases that traditional police work could not solve. From the historic first use of genetic fingerprints i...