Part 1 of 3:
According to FBI, these are the motivators for serial killers. The Bureau does not differentiate between serial killers and violent killers for motive:
• “Anger is a motivation in which an offender displays rage or hostility towards a certain subgroup of the population or with society as a whole.
• Criminal Enterprise is a motivation in which the offender benefits in status or monetary compensation by committing murder that is drug, gang, or organized crime related.
• Financial gain is a motivation in which the offender benefits monetarily from killing. Examples of these types of crimes are “black widow” killings, robbery homicides, or multiple killings involving insurance or welfare fraud.
• Ideology is a motivation to commit murders in order to further the goals and ideas of a specific individual or group. Examples of these include terrorist groups or an individual(s) who attacks a specific racial, gender, or ethnic group.
• Power/thrill is a motivation in which the offender feels empowered and/or excited when he kills his victims.
• Psychosis is a situation in which the offender is suffering from a severe mental illness and is killing because of that illness. This may include auditory and/or visual hallucinations and paranoid, grandiose, or bizarre delusions.
• Sexually-based is a motivation driven by the sexual needs/desires of the offender. There may or may not be overt sexual contact reflected in the crime scene.
An offender selects a victim, regardless of the category, based upon availability, vulnerability, and desirability. Availability is explained as the lifestyle of the victim or circumstances in which the victim is involved, that allow the offender access to the victim. Vulnerability is defined as the degree to which the victim is susceptible to attack by the offender. Desirability is described as the appeal of the victim to the offender. Desirability involves numerous factors based upon the motivation of the offender and may include factors dealing with the race, gender, ethnic background, age of the victim, or other specific preferences the offender determines.”
Serial Murder — FBI
*This publication also details investigative techniques, press releases & family liaison practices. Mollie’s investigators did everything impeccably to this standard.