A series of murders committed in and around Wichita, Kansas, from 1974, by an offender who called himself BTK. The case was closed in 2005 when investigators recovered identifying metadata embedded in a Microsoft Word document that Dennis Rader had sent them on a floppy disk, revealing his identity despite his belief the file had been safely deleted. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Case YearSourced to the subject's own account LocationSourced to the subject's own accountWichita, Kansas, United States 1 Investigative or Reform SignificanceSourced to the subject's own accountRecovered file metadata proved decisive in identifying the offender, an early and influential demonstration of digital forensics in a criminal investigation. 1 Case StatusSourced to the subject's own account Case Status
Case Status (category)Sourced to the subject's own account FAQs
Why did it take so long to catch him, given he had contacted police and media for decades?
Rader went silent for long stretches, over a decade at one point, and left no forensic or documentary trail. He resurfaced voluntarily in 2004 after seeing a television retrospective on the case, and it was that renewed communication, specifically a floppy disk he sent investigators in 2005, that led directly to his identification.
Connections
Associated With
Ressler lectured on the then-unidentified offender years before Rader's arrest and correctly profiled his background.
Source Wikipedia: Dennis Rader
Exemplifies
The case lay dormant for decades before the offender resumed contact in 2004.
Source Wikipedia: Dennis Rader
Source Wikipedia: Dennis Rader
Source Wikipedia: Dennis Rader
Investigated By
Officers from the Wichita Police Department, together with the Kansas Bureau of Investigation, the FBI and the ATF, searched Rader's properties after his arrest; the Wichita Police Chief announced the arrest publicly.
Source Wikipedia: Dennis Rader
Used In
Metadata recovered from a floppy disk identified Dennis Rader in 2005.
Source Wikipedia: Dennis Rader
In the Other Atlases
Took Place In
Also in Geography Atlas: where this subject took place.
Found In
Also in Geography Atlas: where this subject is found.
Sources
1. Wikipedia: Dennis Rader
Lead section
is an American serial killer and mass murderer who killed at least ten people in Wichita and Park City, Kansas, between 1974 and 1991.
infobox, Other names field
BTK Killer
- Used In: Digital Forensics
- Exemplifies: Cold Case
Associated With: Robert Ressler, Profile section, Ressler lecture
At a lecture at WSU, former FBI agent Robert Ressler correctly assumed the killer was a graduate student in the criminal justice field.
Investigated By: Wichita Police Department, Arrest section
At a press conference the next morning, Wichita Police Chief Norman Williams announced, "The bottom line: BTK is arrested."
In Group: Documentary and Digital Evidence Cases, Lead sentence
In a series of crimes that terrorized Wichita in the mid-to-late 1970s, Rader also initiated a series of taunting letters sent to police and media outlets, describing his crimes in detail and referring to himself as "BTK".
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