Jeffrey Gentry is an ABMDI-certified Medicolegal Death Investigator and IAI-certified Bloodstain Pattern Analyst with more than 18 years of experience in death and crime scene investigation.
This channel is dedicated to professional forensic science education, including:
• Bloodstain pattern analysis
• Death investigation procedures
• Crime scene reconstruction
• Forensic documentation
• Expert witness testimony
• Courtroom application of forensic science
With thousands of death investigations and complex scenes analyzed, Jeffrey provides fact-based breakdowns of forensic methodology, real-world case principles, and the science behind crime scene interpretation.
You may have seen his forensic commentary featured in national media and podcast appearances and collaborations.
This is not a true crime entertainment channel.
It is a professional forensic science platform.
For consulting, training, or speaking engagements, send me an email:
jeffreygentry.bpa@gmail.com
JEFFREY GENTRY BPA - BLOODSTAIN PATTERN ANALYST
Ever seen a knife and wondered…
👉 Is that actually blood?
In forensic investigations, we don’t guess—we test.
Presumptive blood tests can reveal hidden evidence in seconds… but they’re not always what they seem.
🧪 Would you trust a positive result?
2 months ago | [YT] | 15
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JEFFREY GENTRY BPA - BLOODSTAIN PATTERN ANALYST
When a death investigator arrives at a scene, what do you think they determine first?
Most people get this wrong.
I break this down step-by-step in my Death Investigation course:
👉 evidenceoverassumption.com/b/aC0TJ
Curious what the answer is? Drop it below.
**check comments to sign up as an affiliate**
3 months ago | [YT] | 16
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JEFFREY GENTRY BPA - BLOODSTAIN PATTERN ANALYST
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If you’re interested in earning commission by sharing our products, sign up here:
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Register now and check back for updates when we go live.
3 months ago | [YT] | 11
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JEFFREY GENTRY BPA - BLOODSTAIN PATTERN ANALYST
From a pattern comparison standpoint, the shoe impression outside Dylan’s room does not align with a Vans outsole.
Vans footwear typically features small, closely packed diamond patterns. The observed impression shows larger, more widely spaced diamonds, suggesting a different class of footwear—potentially a hiking shoe or boot.
Comparable tread patterns can be seen in brands such as Rock and Run.
Can you think of similar brands with diamond patterned outsoles?
3 months ago | [YT] | 22
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JEFFREY GENTRY BPA - BLOODSTAIN PATTERN ANALYST
Evidence Over Assumption
It sounds simple. It’s not.
Assumptions are fast. Easy. Comfortable.
Evidence takes time. Discipline. Restraint.
In forensic work, the moment you think you know what happened…
is usually the moment you stop looking.
That’s where mistakes are made.
Every scene deserves to be understood—not guessed.
That’s the standard.
3 months ago | [YT] | 17
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JEFFREY GENTRY BPA - BLOODSTAIN PATTERN ANALYST
🌍 International Orders Update!
Good news — international purchasing should now be working on our store.
If you’ve been trying to order from outside the U.S., go ahead and give it another shot.
⚠️ If you still run into any issues, please let us know — I’ll keep working on it until it’s fully fixed.
We appreciate your patience and support 🙌 Thank you to those who've reached out to alert us of the issue. You ABSOLUTELY SHOULD BE ABLE to purchase the Bloodstain Pattern Course and take it even internationally 🗺️
3 months ago | [YT] | 6
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JEFFREY GENTRY BPA - BLOODSTAIN PATTERN ANALYST
🩸 Everyone wants to know what happened.
But scenes don’t speak in words.
They speak in patterns.
Most people look at blood and see something emotional.
Investigators look at it and ask:
Where did it start?
What direction was it moving?
What changed between the first drop and the last?
Because the difference between a story…
and what actually happened…
is usually hidden in the details no one else notices.
What’s the first thing you look for at a scene?
3 months ago | [YT] | 14
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JEFFREY GENTRY BPA - BLOODSTAIN PATTERN ANALYST
Hi everyone, welcome to my new YouTube Community! Now you can post on my channel, too. To get started, tell me in a post what you'd like to see next on my channel.
Visit my Community: youtube.com/@jeffreygentrybpa/community
3 months ago | [YT] | 22
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JEFFREY GENTRY BPA - BLOODSTAIN PATTERN ANALYST
Kurt Cobain died from a shotgun wound inside his mouth.
Many investigators assume this type of contact wound would always produce blood on the hands.
From a bloodstain pattern perspective, is that necessarily true?
3 months ago | [YT] | 4
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JEFFREY GENTRY BPA - BLOODSTAIN PATTERN ANALYST
At a scene with cast-off patterns on the ceiling, what is the MOST likely cause?
3 months ago | [YT] | 9
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