Crime Classification Manual
A Standard System for Investigating and Classifying Violent Crimes
Chapter One
Modus Operandi and
the Signature Aspects
of Violent Crime
JOHN E. DOUGLAS
LAUREN K. DOUGLAS
In September 1989, a Shreveport, Louisiana, man named Nathaniel
Code Jr. stood trial for murder. The jury determined Code had murdered
eight people between 1984 and 1987. These eight homicides took
place during three different events: one murder in 1984, four in 1985, and
three in 1987. There were several disparities in modus operandi (actions
taken by an offender during the perpetration of a crime in order to perpetrate
that crime) and victimology (characteristics of the victims) among the three
crime scenes.
Could one man be linked to the murders at all three scenes? With differences
in modus operandi (MO) and victimology, what could link Code with
each of these eight homicides? MO a ... read full excerpt from Crime Classification Manual: A Standard System for Investigating and Classifying Violent Crimes ebook