They Had One Old Tip… Then DNA Solved a 23-Year-Old Murder 🧬

A 23-year-old murder case. An overlooked tip. A DNA trail that led investigators to the man who had once been part of the victim’s family. On May 2, 2001, Leslie Preer was found murdered inside her home in Chevy Chase, Maryland. The investigation produced DNA evidence, but for years, the person behind it remained unknown. Then cold-case detectives took a fresh look at the evidence—and revisited a name recorded in an old tip. This documentary follows the investigation from the original crime and the long years without answers to the forensic genetic genealogy work that reopened the case. It also examines the discarded water bottle at Dulles International Airport that gave investigators a DNA sample to compare with the crime-scene evidence. Eugene Gligor, who had once dated Leslie’s daughter, was arrested in 2024. He pleaded guilty to second-degree murder in 2025 and was sentenced to 22 years in prison. This episode brings together case reporting, original recordings, police interview footage, family interviews, and archival images to tell the story of Leslie Preer and the evidence that finally connected the case. The documentary also looks at what the investigation established—and what questions, including the motive, remain unanswered. ⏱️ CHAPTERS 00:00 The Interview That Reopened the Case 00:22 Leslie’s Disappearance and the First Response 01:53 The Investigation and the Old Tip 03:49 Genetic Genealogy and the DNA Trail 05:40 The Arrest and Police Interview 06:58 The Guilty Plea and Sentence 08:14 The Questions That Remain Which clue changed the direction of the case: the old tip, the genetic genealogy research, or the DNA sample from the water bottle? Share your thoughts respectfully in the comments. If you appreciate carefully researched true-crime documentaries, subscribe to Cluework for more stories about cold cases, forensic evidence, and investigations that took years to reach the truth. 📚 SOURCES & FURTHER READING ABC News — Leslie Preer case and genetic genealogy investigation: https://abcnews.com/US/gligor-detecti... WTOP — Sentencing coverage: https://wtop.com/montgomery-county/20... Montgomery County Police — Cold-case arrest announcement: https://www2.montgomerycountymd.gov/m... This video is a documentary and commentary production. Archival footage and recordings remain the property of their respective rights holders. #TrueCrime #TrueCrimeDocumentary #ColdCase #ColdCaseSolved #LesliePreer #EugeneGligor #DNAEvidence #GeneticGenealogy #ForensicGenealogy #MarylandCrime #ChevyChase #CrimeDocumentary