Forensic Techniques that Helped
Convict Some of the World’s Most
Notorious Serial Killers
Mackenzie Kilkeary
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Forensic Methods to Catch Serial Killers: Bundy, BTK, & Grim Sleeper, Slides of Statistics
The use of forensic techniques in identifying and convicting three notorious serial killers: Ted Bundy, BTK Killer (Dennis Rader), and Grim Sleeper (Lonnie Franklin Jr.). their backgrounds, methods, and the role of forensic odontology, computer forensics, and familial DNA testing in their investigations. It also discusses the reliability of bite mark comparison and the advantages and disadvantages of familial DNA testing.
What you will learn
- What are the advantages and disadvantages of using familial DNA testing in criminal investigations?
- How did familial DNA testing contribute to the identification and conviction of the Grim Sleeper?
- How did forensic odontology play a role in the conviction of Ted Bundy?
- What are the defining characteristics of serial murder according to different sources?
- What was the significance of the floppy disk in the investigation of the BTK Killer?
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Forensic Techniques that Helped
Convict Some of the World’s Most
Notorious Serial Killers
Mackenzie Kilkeary
Overview
What is Serial Murder?
Ted Bundy – Forensic Odontology
BTK Killer – Digital/DNA
Grim Sleeper – Familial DNA
What is Serial Murder?
According to Keeney and Heide
Premeditated murder of 3 or more victims
Over time in separate incident
Murder activity chosen by offender & in civilian context
What is Serial Murder?
According to Egger
Murder of three or more
Each event separated by time and space
Offender spends great deal of time fantasizing and preparing for the event
Ted Bundy
Theodore Robert Cowell
Did not know his real father throughout life.
He was told that his grandparents were his parents and mother was his sister.
Showed a few disturbing tendencies early on, otherwise known as intelligent, funny and happy.
University years
University of Puget Sound (UPS)
University of Washington – Stephanie Brooks
University of Utah – Law School
Ted Bundy
40 murder between 1964 & 1978
Arrested while driving a stolen vehicle
Forensic Odontologist matched bite marks from victim to Bundy’s teeth.
Sentenced to death in 1980 and executed in 1989 by “Sparky.”
Ted Bundy
Forensic Odontology
Identify human remains
Determine source of bite marks
Estimate age of skeletal remains
Testify on dental malpractice
Dr. Souviron
Forensic Odontologist
Compared bite marks to Bundy’s teeth in court.
Pointed out unique features that matched between Bundy’s teeth and the marks.
Described general size of teeth, structure of alignment, the chips, sharpness factors.
BTK Killer
Dennis Lynn Rader
Grew up in Wichita, Kansas
Showed signs of trouble early on.
Served in Air Force in 1960’s & worked for ADT Security Services in 1974.
1 st^ murders in 1974 – Bind, Torture and Kill
Communication with public though letters.
Known as an attentive husband and father, a boy scout troop leader & president of his church.
Stopped killing for a period of time.
BTK Killer
The Floppy Disk
Computer forensic experts found that the disk contained one valid file with “this is a test” and directing police to an index card left with the disk.
Under properties section of a floppy disk, file saved by “Dennis.”
Found disk had been used at the Christ Lutheran Church and Park City Library.
Conviction & Life Sentence
Arrested in 2005
Charged with 10 counts of 1st-degree murder.
Plead guilty and serving 10 life sentences.