the whitechapel murders l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Whitechapel PowerPoint Presentation
Download Presentation
Whitechapel

Loading in 2 Seconds...

play fullscreen
1 / 16

Whitechapel - PowerPoint PPT Presentation


  • 165 Views
  • Uploaded on

Whitechapel Linkage Analysis

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

Whitechapel


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
the whitechapel murders
The Whitechapel Murders:
  • A Linkage Analysis

Brent E. Turvey, MS - Forensic Science

Forensic Solutions, LLC

Sitka, Alaska

www.forensic-science.com

linkage analysis
Linkage Analysis
  • Case linkage or linkage analysis refers to the process of determining whether or not there are discrete connections between two or more previously unrelated cases through crime scene analysis.
linkage analysis3
Linkage Analysis
  • It involves establishing and comparing the physical evidence, victimology, crime scene characteristics, modus operandi (MO), and signature behaviors between each of the cases under review.
linkage analysis4
Linkage Analysis
  • In order to refrain from misleading the court with respect to case linkage certainty, the results of such examinations are best expressed with one of four confidence statements:
  • behavioral dissimilarity;
  • investigative linkage;
  • behavioral commonality; and
  • probative link.
linkage analysis5
Linkage Analysis
  • Behavioral dissimilarity means that behavioral evidence components (e.g. MO, victimology, and offense signature) have been compared and they are distinctively dissimilar.
linkage analysis6
Linkage Analysis
  • An investigative link is a superficial connection between one or more cases that serves to inform the allocation of investigative resources (e.g. similar victim type, crime type, geographic area, and motive).
  • Such a link, as the name suggests, requires further investigation. It is not conclusive.
linkage analysis7
Linkage Analysis
  • A behavioral commonality is present when behavioral evidence components have been compared and they are similar but not necessarily distinctive (similar MO, victimology, motive, and offense signature aspects).
linkage analysis8
Linkage Analysis
  • A probative link is a connection between one or more cases that is sufficiently distinctive to support the inference that the same person is responsible.
  • In such cases, behavioral evidence components (e.g. MO, victimology, and offense signature) have been compared and they are not only the same, they also occur with limited behavioraldissimilarity.
emma e smith 45 april 2 3 1888
Emma E. Smith, 45April 2-3, 1888
  • Prostitute
  • Heavy drinker/ belligerent
  • History of injury
  • Physically assaulted
  • Attacked by 4 youths ??
  • Raped/ stick in genitals ??
  • Robbed
  • Died of peritonitis

Behavioral Dissimilarities

martha tabram 36 april 7 1888
Martha Tabram, 36April 7, 1888
  • 5ft 3in. tall
  • Prostitute
  • Alcoholic
  • Husb.: Separated for 13 years
  • Husb.: 1/2 Crown per week
  • Police: Warrant against husband
  • George Yard Bldg.
  • 39 stab wounds chest/ stomach
  • Both knife and dagger used

Behavioral Dissimilarities

mary ann nichols 45 august 31 1888
Mary Ann Nichols, 45August 31, 1888
  • 5ft 2in. tall
  • Prostitute/ Married but separated
  • Alcoholic
  • Bucks Row
  • Lying on back
  • Bruises on jaw and cheek
  • Bruised hands
  • Laceration of tongue
  • Throat cut deep
  • Abdomen cut open
  • Two stabs on “privates” parts

Probative Link

annie chapman 47 september 8 1888
Annie Chapman, 47September 8, 1888
  • 5ft tall
  • Prostitute / Married but separated
  • Recent illness/ hospital
  • Alcoholic
  • Back yard of No.29 Hanbury St.
  • Legs drawn up
  • Bruising to face/ swollen
  • Throat cut deeply/ jagged
  • Disemboweled
  • Missing womb, genitals, bladder
  • Missing rings/ trophy or souvenir

Probative Link

elizabeth stride 44 september 30 1888
Elizabeth Stride, 44September 30, 1888
  • 5ft tall
  • Prostitute/ Married but separated
  • Alcoholic: history of drunk/ disorderly
  • Inside the gates of Dutfield’s Yard
  • Legs drawn up
  • Throat cut deeply
  • Bruised shoulders / chest
  • Body found warm
  • “Double Event”/ Interrupted scene?

Behavioral Commonality

catherine eddowes 46 september 30 1888
Catherine Eddowes, 46September 30, 1888
  • 5ft tall
  • Prostitute
  • Alcoholic: history of drunk/ disorderly
  • Just released from police custody
  • Mitre Square
  • Clothes/ legs drawn up/ abdomen exposed
  • Ext. cuts to the face (eyelids, nose, cheeks)
  • Throat cut deeply
  • Disemboweled/ arranged
  • Genital area cut/ stabbed
  • Womb removed

Probative Link

mary jane kelly 25 november 9 1888
Mary Jane Kelly, 25November 9, 1888
  • 5ft tall
  • Prostitute
  • Indoor scene/ 13 Miller’s Court
  • Lying naked in middle of bed
  • Legs up and open
  • Defensive injuries to hands/arms
  • Throat cut deeply
  • Abdominal cavity eviscerated
  • Organs removed/ arranged at scene
  • Breasts cut off
  • Arms mutilated
  • Face hacked up

Probative Link

alice mckenzie 40 july 17 1889
Alice McKenzie, 40July 17, 1889
  • Prostitute
  • Castle Alley
  • Throat cut deeply
  • Jaw cut
  • Bruising to chest and abdomen
  • 7in cut from left breast to navel
  • Small cut to mons veneris (pubic mound)
  • Farthing beneath body?
  • Interrupted scene?

Behavioral Commonality