Forensics Expert Explains How to Analyze Bloodstain Patterns | WIRED

Crime scene analyst Matthew Steiner teaches the techniques forensics experts use to investigate bloodstain patterns, ranging from easy to difficult. Matthew explains how different types of forces create different bloodstain patterns in the crime scenes, and demonstrates how they can analyze these patterns to figure out how a crime was committed.

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Forensics Expert Explains How to Analyze Bloodstain Patterns | WIRED


  1. Abdullah Hilman

    Abdullah Hilman

    Před dnem

    Everyone gangsta untill they know that he uses actual blood

  2. Jason


    Před dnem

    this is pseudoscience

  3. Dutchwhore


    Před dnem

    I was always fascinated in crime or corpses. But instead of a job I got therapy instead 🥲

  4. Meta Yessica

    Meta Yessica

    Před 2 dny

    Impressive. Thank you

  5. faux


    Před 2 dny

    *Dexter sweating*

  6. Wifsk


    Před 2 dny

    Ah yes this will prove usefull to frame my frirnd kyle

  7. mani krishna

    mani krishna

    Před 3 dny

    It reminds of Dexter's father

  8. Sonic


    Před 3 dny

    why am i here you ask? its 5 am what'd you expect

  9. Floppy Salmon

    Floppy Salmon

    Před 3 dny

    This guy must love his job

  10. Rhylek


    Před 3 dny

    this will be dexter graphics in 2010

  11. CØLAB


    Před 3 dny

    This is why I always bring a mop

  12. Ysofar ah

    Ysofar ah

    Před 3 dny

    Just me or whenever he drop the blood you just wanna put your hand and slam it just to be satisfied and wanted it to splatter, no? Okay

  13. Aritheman37


    Před 4 dny

    People who dont know that this is repeatedly found to be a complete BS science in courts. These people are so full of it. Honestly sad.



    Před 4 dny

    Jesus Loves You, Don’t Forget To Pray! He Is Here To Help You! cast All Your burdens to him! He cares. I Hope You Have An Amazing Day 🖤🙌🏻 - John 14:6 King James Version 6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.

  15. Enikő Simon

    Enikő Simon

    Před 4 dny

    its sooo Dexter for me XDD

  16. aila mcloughlin

    aila mcloughlin

    Před 5 dny

    iwatched this on my school chromebook once suprised they didnt ask questions

  17. Nia..


    Před 5 dny

    I was having fun and then he started talking about math and my brain stopped working.

  18. LUST amv'S

    LUST amv'S

    Před 5 dny

    Suprising that no one in comment is talking about DEXTER

  19. Year of Rooster

    Year of Rooster

    Před 5 dny


  20. el wiwi

    el wiwi

    Před 5 dny

    This is what we should be taught in school...

  21. Kuroo Tetsurō

    Kuroo Tetsurō

    Před 5 dny

    We had a break in through a window, the person got cut and started bleeding so we contacted the police and got to know who broke in.

  22. ItzLazy Alex

    ItzLazy Alex

    Před 6 dny

    Im honestly here to see how Hannibal got taught various methods and got away with all of it for years

  23. Deva


    Před 6 dny

    first thing hit my mind is DEXTER!

  24. DaddyDark


    Před 6 dny


  25. cakeisavegatable


    Před 6 dny

    While fascinating, I worry there are a lot of "that-one-kid-in-class" types watching this...

  26. Armin


    Před 6 dny

    Scary part is statistically there must be at least 1 murderer watching this out of 11 mil people.

    • ramendisposer123


      Před 3 dny

      Fr like get ready for the next "MOST HARD SLOVED CASE" vid on youtube

  27. Feynman fan

    Feynman fan

    Před 6 dny

    Mad dexter vibes🌟

  28. nour chbiki

    nour chbiki

    Před 6 dny

    do they choose the experts by their last name?

  29. insert creative user name here________

    insert creative user name here________

    Před 7 dny

    Why in gods name is this in my recommendations 😂😂😂

  30. Pumpkin Bumpkin

    Pumpkin Bumpkin

    Před 7 dny

    OH THAT SAID FORENSICS.... i thought it said foreskins..... oh

  31. Nevaeh Gower

    Nevaeh Gower

    Před 7 dny

    I miss the show dexter 😅

  32. Billy Mays

    Billy Mays

    Před 7 dny

    Why was I recommended this lpl

  33. Artsy


    Před 7 dny


  34. Arwen


    Před 7 dny

    If you are watching this as a murderer, please don’t kill anyone, please get help. Don’t take a life of someone else

  35. Alyna


    Před 8 dny

    CZstate will reccomend anything at this point-

    • Alyna


      Před 8 dny

      Btw 8 appreciate that it recommended me this because I'm an artist and I've watched this more that 3 times.

  36. Gabby Valenciano

    Gabby Valenciano

    Před 8 dny

    'This is my design'

  37. nickacelvn


    Před 8 dny

    Very informative. You would think with all this knowledge and technology you lot would be able to weed out the crooked cops.

  38. AVE - آڤي

    AVE - آڤي

    Před 8 dny

    he is a dexter.

  39. Pipefield


    Před 8 dny

    Thanks. I needed this.

  40. •Bee꧂


    Před 8 dny

    imagine if he got a phone call saying "sorry we gave you the wrong blood, we will need that back for investigation" and he just poured most of the blood on random surfaces

  41. Zentify


    Před 9 dny

    Somewhere in the world there is probably a murderer watching this rn

  42. Kyle Bolton

    Kyle Bolton

    Před 9 dny

    CZstate back at it again recommending me FBI watchlist material at 3 in the morning.

  43. D O G

    D O G

    Před 9 dny

    Thanks now I can clean up the mess

  44. Brandon Zuniga

    Brandon Zuniga

    Před 9 dny

    Dexter Vibes anyone ?

  45. screaming lama

    screaming lama

    Před 9 dny

    Are you related to a Frederick Steiner German scientist ring any bells?

  46. nishinoya yū

    nishinoya yū

    Před 9 dny

    baek bom saem be like :

  47. Kabir Malek

    Kabir Malek

    Před 9 dny

    Dexter was a better blood spatter analyst

  48. irene


    Před 9 dny

    not me watching this at 5 am

  49. Mizuki


    Před 10 dny

    Me, a gore artist: Understandable, have a nice day.

  50. apologetic ᵕ̈

    apologetic ᵕ̈

    Před 10 dny

    we had to learn about blood patterns in 4th grade gifted classes. we had to memorize them over the span of one period. it wasn't as boring as it seemed though, our teacher made it fun for us of course.

  51. Zarah Andrahilde

    Zarah Andrahilde

    Před 10 dny

    Must be so satisfying to avenge a victim by science.

  52. ً


    Před 10 dny

    this is kinda of a brutal crime, REAL brutal crime

  53. Ice Bear 수줍은

    Ice Bear 수줍은

    Před 10 dny

    Is it just me who can’t stop thinking that they used actual sheep blood 🩸

  54. Arthur Noor

    Arthur Noor

    Před 10 dny

    Yeah dexter already showed us most of this lol

  55. Pu1to :•

    Pu1to :•

    Před 10 dny

    I swear to god school should teach these instead of algebra like tf when do I use that in my life??

  56. Pratyaksh Narayan

    Pratyaksh Narayan

    Před 11 dny

    Plot twist he's real life dexter.

  57. Dish Bahadur

    Dish Bahadur

    Před 11 dny

    this niggas to smart fa me

  58. Elmo Kinarya

    Elmo Kinarya

    Před 11 dny

    so you're saying that i want to get this job i have to master trigonometry? no thankyou

  59. henry_kidd


    Před 11 dny

    The science makes total sense, but you lose my at even the most simple math equations. Why does everything have to include math😩

  60. Andrzej


    Před 11 dny

    I can't be the only one who thinks of Dexter Morgan.

  61. Mammoney


    Před 11 dny

    I love when my victims create a nice, red painting on the walls and floor.

  62. Boojump


    Před 11 dny

    Ferb I know what we’re doing today

  63. Meaghan


    Před 11 dny

    I like the fact this is in my recommended

  64. Krystal Long

    Krystal Long

    Před 12 dny

    The bad radiator monthly watch because dogsled consistently type among a symptomatic anthropology. determined, plausible asphalt

  65. Thanurs


    Před 12 dny

    Why did I get this in my recommended, I’ll never know. But this is mildly interesting.

  66. Banana Split

    Banana Split

    Před 12 dny

    Imagine they forgot to clean up (which is unlikely) the janitor would be freaked out- (I think)

  67. constance smoothpiee

    constance smoothpiee

    Před 12 dny

    Me a person with heavy period "you dont say"

  68. Krinky Stinky

    Krinky Stinky

    Před 12 dny

    Okay now find Yoshikage Kira

  69. Leonardus Eventias

    Leonardus Eventias

    Před 12 dny

    Friend: why u watching vid about bloodstain pattern? Me : just in case... ..... just in case

  70. Carson McDonough

    Carson McDonough

    Před 13 dny

    This guy seems a little too happy.

  71. Siddharth Pareek

    Siddharth Pareek

    Před 14 dny

    Tonight's the night.

  72. 𝔾𝕦𝕤


    Před 14 dny

    Normalizing murder... Check ✅

    • River


      Před 10 dny

      It is normal yet horrible

  73. 🤘😎🤘


    Před 15 dny

    Be honest, who do you want to kill tonight?

  74. Tessie Rideaux

    Tessie Rideaux

    Před 15 dny

    The embarrassed poultry randomly scrape because currency supposedly flower via a careful satin. tacit, puffy swamp

  75. eclinvo


    Před 15 dny

    You'll only find people who love their job doing stuff like this because duh they love their job. Wish more people like this guy existed.

  76. Taylor Davis

    Taylor Davis

    Před 15 dny

    jan 2020: the mask is not flattering when talking on camera jan 2021: you better be wearing ur masks lol

  77. Amir Da Smoker

    Amir Da Smoker

    Před 15 dny

    I watch dexter. I’m familiar with this

  78. Sahan Lakmal

    Sahan Lakmal

    Před 15 dny

    Real life Dexter

  79. NezukoT_T


    Před 15 dny

    Road to Sherlock tomorrow

  80. Gia Jones

    Gia Jones

    Před 16 dny

    When you get so obsessed with criminal minds that you want to study blood patterns 😳

  81. John Cullen

    John Cullen

    Před 16 dny

    @joerogan says this is fake logic

  82. Violeta Rodriguez

    Violeta Rodriguez

    Před 16 dny

    Dear FBI, yes, this was in my recommendations But also yes, i will use this information one day And also yes, im dangerous :)

  83. Oddy Nuff

    Oddy Nuff

    Před 16 dny

    Blood stain analysis is bs. Junk science

  84. Luisana Pereira

    Luisana Pereira

    Před 16 dny

    i want to become a forensic analyst, maybe i should’ve payed attention in geometry 😭

  85. 이해양


    Před 16 dny

    Me, a writer and artist, watching this: My mom confused and even freaked out: 🧍🏽‍♂️

  86. Hannah Woodhams

    Hannah Woodhams

    Před 16 dny

    I'm a writer, I swear

  87. Jonathan azbell

    Jonathan azbell

    Před 16 dny

    There on to me

  88. Will Stab If Startled

    Will Stab If Startled

    Před 16 dny

    The fact that this is way more interesting than school makes me feel a guilty pleasure

  89. Abhishek Waskar

    Abhishek Waskar

    Před 16 dny

    Am I the only one who remembered DEXTER right after seeing this?

  90. jeff


    Před 17 dny

    Hold tight Grandma. Time to go

  91. Baylor Clark

    Baylor Clark

    Před 17 dny

    CZstate knows that I just finished 3 seasons of Criminal Minds in a week

  92. Sora


    Před 17 dny

    How does one become a certified crime scene analyst I would love to study and get that certification

  93. Moss the Enbee

    Moss the Enbee

    Před 17 dny

    artists everywhere thank you for making it easy to do bloodstain patterns

  94. Marcus Minjares

    Marcus Minjares

    Před 17 dny

    Who clicked on this with a thought of Dexter🔥

  95. Yari Rubu

    Yari Rubu

    Před 18 dny

    This was interesting.

  96. Flair


    Před 18 dny

    Someone help me out here, he performed all the examation with none moving objects and I can imagine most cases the victims would be in momentum which means the blooded pattern would be different than which if they were not moving

  97. swagmoney 101

    swagmoney 101

    Před 18 dny

    I’m just happy to have gotten the Dexter reference within the first minute

  98. Alex Piva

    Alex Piva

    Před 19 dny

    All of these examples are completely unrealistic ideas of what would actually happen in the real world.

    • Brandon Melhem

      Brandon Melhem

      Před 17 dny

      And why would you know that?

  99. Tsakani Msisinyane

    Tsakani Msisinyane

    Před 19 dny


  100. Ezequiel Corral

    Ezequiel Corral

    Před 19 dny

    Previously on Dexter…