Nailed

Forensic Files

HLN

Society & Culture, True Crime

4.6 • 3.7K Ratings

🗓️ 18 December 2025

⏱️ 22 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

This episode originally aired May 23, 2019. Just weeks before a witness is to testify against the man accused of sexually assaulting her, she is murdered in the front yard of her own home. Investigators immediately suspect her attacker, but they don't have enough evidence to prove his guilt. It would take fifteen years, and the remarkable advances in forensic science and DNA testing which occurred during that time, to enable police to nail the killer. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Transcript

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0:00.7	Hello mate.
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1:03.3	Just weeks before testifying at a criminal trial,
1:07.6	one of the key witnesses, a brilliant research scientist, was murdered.
1:14.6	For 15 years, there were many suspicions, but little proof.
1:20.6	Ironically, advances in the very research the victim had been working on, helped nail her killer.
1:38.6	When you ask friends and colleagues about Helena Greenwood, you hear words like,
1:47.0	brilliant, quiet, honest, and a hard worker.
1:53.8	Helena earned a Ph.D. and microbiology and was an executive in the biotech industry.
	...

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